Hi, Larry your DIY Answer Guy here.
If you're not familiar with Twitter.com, you're really missing out on a great networking opportunity and the ability to interact and learn from a lot of experts in an array of fields.
Essentially, Twitter is a "mico-blogging" system where people interact with each other by posting messages to each other (constrained to 140 characters). The limited space forces you to get to the point quick which is really nice.
Anyway, I'm an active user of Twitter (some of my latest "tweets" are listed below).
I look forward to seeing you there!