I try to do my part for Wikipedia, although I tend to not really add anything of use to the site besides vandalism reversions and spelling and grammar corrections because everything is already on this ginormomassive (Gigantic + Enormous + Massive) encyclopedia.
I like shiny things.
And I just learned how to actually make a list look like a list on Wikipedia.
I've contemplated the use of my user page as a personal sandbox, but I'm definitely learning stuff from it.
Besides the Village pump and article-related talk pages, there are other ways to talk to Wikipedians. The English IRC channel is quite popular, regularly reaching up to 300 users. If you care about our policies and general Wikimedia-related matters, you may also want to consider subscribing to one of the mailing lists (high traffic!).