Google Webmaster Tools - Keywords

Looking through the keywords listed in my Google Webmaster Tools I noticed that "posts", "forum", "avatar", "location" are the top four keywords, the fifth is relevant to the subject of my site.

I assume that these keywords are present as they, with the exception of "forum", appear in the postbit for every single post.

So the question is, is it worth putting a conditional around the postbit fluff to hide it from guests and therefore Google, or maybe do something like vbseo with notices and display the postbit info via javascript.

EDIT : its been a while since I have been on the vbseo forums, and have just noticed the share link (bottom right of posts), is this mod available to the general public?

Google Sitemap Keyword Relevance - vBulletin SEO Forums

share/like is part of vbseo 3.6