Web 2.0 links and keywords

Im linking a bunch of web 2.0 content sites together. They will be on a related topic, but should I focus on the same keyword? I'd like to, but im worried google will take notice and all my work will be for not.

Wha chu tink?

i think you will have no problem if you do the same keyword. but if you worry, u can use another keyword that related to you main keyword.