Start pages
This is another thing I always meant to look into more that I’m finally getting around to thanks to 23 Things.

You can choose to link your iGoogle page to your Google account, if you have one, so you can access your Gmail, Google Bookmarks, search history, etc. on your start page. Or as my husband puts it, “If you’re willing to drink the Google Kool-Aid, it’s good to have all of your stuff in one place.” iGoogle also has a chat feature that lets you talk to people who use Google Talk or Gmail chat.

PageFlakes is more social; you can publish your page so others can see it (Pagecasting). You can choose between a Group Pagecast that can be viewed by invited members only, or a Public Pagecast, which can be seen by anyone. You can also use the “Take a Flake” feature to easily copy and paste a flake’s HTML to share it on your website. Another feature I like is the “Anything Flake”, into which you can enter text, images, or HTML. I used it to add a Last.fm widget to my start page and it worked perfectly.

MyYahoo! combines the social features of PageFlakes with the convenience of having all of your Yahoo! services in one place. Easily share a module or tab with your friends by email.
I also checked out a couple of other start pages:

Netvibes allows you to create a Public Page, in addition to your private page. They aren’t synchronized; you have to manage them separately, and you can’t put a bookmarks, mail, or Delicious widget on your public page. You can share feeds, widgets, or tabs by email, im, or adding them to your blog or MySpace profile. You can also leave comments on someone’s public page. Similar to Pageflake’s “Anything Flake”, Netvibes offers an HTML widget and a Flash widget.

myAOL’s Mix and Share feature lets you create public folders containing feeds and/or bookmarks that you can share by email or im. myAOL also offers a recommendation service called Mgnet (pronounced “magnet”). You can save and rate recommended items, and Mgnet will base your recommendations on your saved items and ratings, as well as your searches in their search bar. Mgnet has two tabbed pages: one is your recommendations, the other is What’s Hot?. Finally, Mgnet includes a “What else ya got?” button to refresh the page and get more recommendations. Mgnet seems pretty similar to Stumbleupon, for those familiar with the social bookmarking service.
A couple of fun start pages that you might want to try out: Schmedley and Qrowd.
The more I played with the start pages, the more I realized how useful a tool they are, and how limited the current options are. What I’m looking for in a start page is a feed reader, bookmarks of tools I use on a regular basis, and a few widgets for things like social networking and chat, email, weather, movie and tv listings, and online radio. I’d like to see more integration between services in general, but especially with start pages. If I can’t access my accounts through my start page, it’s just a glorified feed reader. I haven’t found a start page that I’m completely satisfied with, but there are a lot out there, so I’m going to keep looking.
Check out this list of popular bookmarks tagged “startpage” in Delicious for more options.
Calendars
Start pages come with their own calendar widgets, so I tried out Google Calendar and Yahoo! Calendar. Both are easy to use and integrated with their other services.
A few features that make managing your events in Yahoo! Calendar easy: “Quick add event” just below the calendar (add to any date, no matter where in the calendar you are), Event Lists view, and Task view. You can import from or export to Palm Desktop or Outlook. Yahoo! Calendar lets you choose how you share your entire calendar (private, friends, or anyone) as well as individual events (private, show as busy, or public). You can also create “Special Friends” who can edit your calendar. If you use Yahoo! Groups, you can use Calendar to create a group calendar. Finding anyone’s Yahoo! Calendar is easy: just search by their Yahoo! ID. You can send out invitations to events from Calendar or email friends a URL that adds your event to their Yahoo! Calendar. Finally, you can set Yahoo! Calendar to remind you about events by Yahoo! Messenger, email, or cell or other mobile device.
Google Calendar has an awesome feature called “Quick Add”. Just type in your event in everyday language, “Doctor’s appointment 9 am May 7″, and Calendar creates the event in your calendar at the time and on the date you specified. It has an event list, too; it’s called “Agenda”. Calendar will automatically add invitations to your calendar and remind you by email or SMS. You can embed your calendar on your website or blog, make your calendar public, choosing whether to share details or just your status (available or busy), and share with specific people, setting their permission settings (how much they can see, whether they can edit or manage sharing). If you share your calendar, people can subscribe to it.
I don’t see myself sharing my calendar in the near future, so I’m just looking for something to help me keep track of appointments and the few non-work related events in my life. Either Yahoo! or Google would do the trick. Which I choose depends on which start page I end up using.
Lists
Again, start pages include their own list widgets. Ta-Da Lists is pretty basic: make lists, check off tasks as you complete them, and share them with others if you want. Remember the Milk adds to this reminders (via email, SMS, or IM), tagging, search, notes, RSS, and integration with a bunch of other services (Gmail, Twitter, and Netvibes, just to name a few). One of my favorite features is “Locations”, which lets you set a location for a task that you can then view on a map.
Ta-Da Lists and Remember the Milk are a little too simple for my needs. I currently use Luminotes, a wysiwyg wiki notebook. You create notes in notebooks (create as many notebooks as you want). You can link notes together, attach files to them, and search through your entire notebook. You can share your notebooks by email, choosing whether your friends can only view your wiki, edit it, or invite others to share it, though I’d recommend something like PBWiki or Backpack if you’re going to collaborate with others.
Backpack
Backpack is a wiki with other tools integrated into it to facilitate planning, especially within groups. Backpack Calendar will send you reminders via email or SMS, and you can subscribe to calendars using iCalendar. If you have multiple calendars, they will be color coded. Backpack Messages is intended to replace email: post a message, and others can read it and comment on it, and their comments are displayed below the message (like a blog). Writeboards are text documents for which all versions are saved. You can compare versions, revert to a previous version, and comment on the document. The Journal is like Twitter: update your status to let people know what you’re doing, and when you’re done, write a short journal entry telling everyone what you did.
You can make a page public (anyone will be able to see it, though they won’t be able to edit it). If you choose to share it with specific users (in your account), or email an invitation to people from different Backpack accounts, they will be able to edit it.
I think Backpack could definitely help organizations get, well, organized. For my personal use, though, the free plan doesn’t sound as good as Luminotes. It doesn’t include the Calendar (which is the only reason I would switch), you’re limited to five pages, and you can’t upload files.
PDF Converters
I’m actually in the market for a PDF converter, so I looked at PDF Converter and Zamzar. Three ads popped up as soon as I went to the Zamzar site, so I didn’t spend much time there. They convert between many different formats, including audio and video formats. The maximum file size you can convert for free is 100 MB. PDF Converter’s free plan has no conversion file size limit. Besides converting from over 70 formats to PDF, you can convert PDFs to Word documents, extract tables from PDFs to Excel, and extract images from PDFs (two page limit for all services but converting to PDF). They even offer a free web to PDF service that you can add to your blog or website to let visitors save the page to PDF. I’ve been told by a coworker that its Word to PDF conversion works as advertised, and I’m looking forward to trying it out myself.
More productivity tools
My husband and I are currently using Google Docs to coordinate our apartment hunt.
URL shorteners can be helpful. I like doiop.com.