This thread caught my attention, basically because the indie game studio which i am part of has recently decided to start making games for mac. (the games work on pc too though).
I think I might be able to share some interesting data that we gathered when releasing our first game.
We sent press releases to both Mac and PC sites/magazines and newsfeeds. We sent to the same amount of sites, for both pc and mac, and to sites of about the same 'size'.
About 90% of the mac sites published our story, even big ones. We appeared on the front page on many large sites, right next to news about steve jobs and ipod stories.
Few of the Pc sites published our story. There was a deep silence between us the recipients that was hard to analyze since they didn't answer. However, a few of them, as i said, published the story, often on the front page of things as well.
Now, here comes the really interesting part:
When looking at the visitor traffic this generated we found a scary pattern.

Each time a mac site had taken up our story, the traffic skyrocketed, whilst every time a pc site had taken it up, nothing happened.
what does this mean? Can't be sure, but it sure opened our eyes about the mac community.