I had heard of Johnny Long before I attended his briefing at Black Hat 2004. Well known for his research on finding information of value to hackers through Google, it was a talk I looked forward to seeing and left well-satisfied. Everything I've read about Johnny Long's character has been top notch, such as this post by Richard Bejtlich of TaoSecurity. Here's Johnny's post about what he's going to do in May:
Johnny Long and his wife are headed to Uganda to work with AIDS Orphans Education Trust. Missions trips like this aren't cheap and a lot of times the folks going have to raise the bulk of the cost themselves. If you'd like to help Johnny, check out his post about how to contribute.