For those who've been interested in participating in future clinical research trials, good news! The NIH has just launched a website to make it easier to match us with researchers, [url="https://www.researchmatch.org/"]ResearchMatch[/url]. Here's their [url="http://www.nih.gov/news/health/nov2009/ncrr-10.htm"]press release[/url], which says
"Participant recruitment continues to be a significant barrier to the completion of research studies nationwide Ã¢â‚¬â€ recent NIH data indicates that just 4 percent of the U.S. population has participated in clinical trials," said NCRR Director Barbara Alving, M.D. "ResearchMatch is a tool that can improve the connection and communication between potential participants and researchers providing opportunities for the public to contribute to advancing new treatments."
If you register there's no obligation to participate in any given trial -- you can pick and choose. :-)
I've also linked this in the FAQ in News.