I’m a dedicated WordPress supporter. The fact that this particular blogging software exists as an open source offering is, indirectly, paying my bills. You see, most of my income is from designing WordPress themes (and leeching The Blog Herald of course), and that would be pretty hard if WordPress wasn’t free. Still possible, but I sincerely doubt that the system would be this widespread, hence I would have a harder time finding clients that needs to prettify their blogs and sites.
When I was getting started with WordPress quite some time ago, pre-1.5, the community was a great help. The WordPress support forum answered my questions when I needed it to, although most of them was actually already out there, on the forum or in the WordPress wiki, called Codex nowadays, a great resource.