I'm finding a few bugs
Be sure to report them and report them properly - which can be a pain in the butt.
I'm a big fan of responsibility. I haven't authored the article yet, but it's on my list of articles to write.
As a user of free software, one of our biggest responsibilities is to report bugs. We are the quality control and the developer's don't always notice the bugs themselves. As users of free software, we're obligated to report the bugs we find. It's our duty to help make the software better. (Dev's should make it easy/easier to report bugs.)
I plan on a whole article regarding this very subject. I just haven't written it yet.