Marco Cantu’ has done an interesting post about online communities. It seems that as a C# developer I should join some professional network like LinkedIn. So now I add a button on this blog which links to my LinkedIn profile.
http://blog.marcocantu.com/blog/researching_online_communities.html
The profile is similar to my resume where I put all required information there. This is completely different from my Facebook profile which mainly focuses on my education.