I think you’d find this blog post helpful.

I’m afraid with Blackberry there are a whole other set of issues that we have to deal with, which make it almost impossible for us to develop properly for that platform given the small staff that we have. Pretty much any mobile browser that’s been built around WebKit will work. Blackberry is one of the few devices on the market that does not utilize it, which means we’d have to do a lot more dev work to get the site to render properly. In addition, one of the things that I noticed at the mobile meetup is that the web browser is not even standard within the Blackberry line! Every time a new person with a Blackberry would step up, I’d cringe to see the way the site rendered – on some newer devices, it would be (mostly) fine…older devices were a disaster, but almost every BB device I saw that night rendered differently. It’s sort of at this point, we just have to throw in the towel, I’m afraid. Here’s to hoping they start to standardize – it would make our jobs a lot more doable.