Shareflow: Riding Before the Wave?
In May, Google announced Wave, its e-mail-IM-collaboration project, but at this writing only developers had seen it. Zenbe's Shareflow service is similar, but available now. With Shareflow, you create a "flow" for a topic or project. That flow can include documents (including images and videos uploaded to Shareflow's servers), comments, events, and maps. You can forward pertinent e-mail messages to a special address, and they'll show up in your flow too. Whether you're using the free or paid ($80 per month) service, you can invite as many people as you wish to participate.
TweetPsych: What Your Tweets Say About You
Even from messages of 140 characters or less, it's not hard to get a sense of someone's personality. TweetPsych aims to put some science behind the analysis. Give it a Twitter profile name, and it'll spit out a psychological dossier. Mine told me that I like similes, not metaphors; that I'm obsessed with time; and that my social behavior is limited (like I don't hear that enough from my wife). TweetPsych tries to identify other Twitterers who think as you do, but if I do tweet like any of the people it pulls up, I'm shutting down my account pronto.
FriendShopper: Multiple PCs, One Purchase
Many couples are so busy that they can't even shop together online. For such harried people, FriendShopper brings some useful tools. Add a bookmarklet for the free service to your browser. When you see a product you're interested in, you click the bookmarklet and decide whether you want to save the page, share it with a friend, or both. When a friend sends you a message about a product you shared, it comes with a picture, so even if their note is as vague as "I like this!" you'll know what they're talking about.