In Valerie's blog post: 5 ways to find people who know stuff on My developerWorks, she gives excellent tips on how to discover people in our developerWorks community. These are all great ways to find other members that share common goals and interests with you.
Here is another tip... one that is often overlooked: Your profile tags. These tags are more than just an easy way for other members to connect with you.... the tagging widget also has a neat feature that a lot of members may not be aware of... the ability to perform a person search right from the profile!
When you are viewing either your own profile, or another members profile, simply click on any tag in the tag widget, and a person search on that tag keyword is performed.
For example, clicking the "designer" tag in my profile:
Will display search results for all members and groups that are tagged "designer":
Profile tags... not only a good way to share your skills and allow other to find you, but also a neat quick search feature!