Hitchhikr allows those of us who cannot attend a particular conference to continue our own professional development at our leisure. Here's a great blog post by kstevens77 discussing hitchhikr which includes a link to David Warlick's podcast about hitchhikr.
Mr Warlick says, Hitchhikr was invented, to provide you with a virtual space where, thanks to blogs, podcasts, and RSS, we can connect, share, respond, and grow knowledge out beyond the place and time of the event.
I was disappointed that I couldn't find the AASL's recent conference in Reno. We have to keep in mind that hitchhikr is only as good as those who use it and those who TAG. So be sure that you do use tags. And, keeping that in mind, I registered WEMTA's spring conference. Check it out.