Jeff Atwood wrote a funny (and very true) article about what’s new or not so new in these Web 2.0 days. I especially had to laugh at the idea that “new” ideas on the net are merely replicas of old UNIX tools introduced by Marc Hedlund.
talk, finger ICQ LISTSERV DejaNews ls Yahoo! directory find, grep rn Bloglines pine Google Mail mount Amazon S3 bash Yahoo! Pipes wall
Go and check out the full posting: Coding Horror: When In Doubt, Make It Public.
And make sure you also read the comments for some more funny ideas.