ArcadeFly is down now while we move from Slicehost to Heroku. It's an amazing platform, and we look forward to seeing how things run on it. My tests so far show it'll be a lot faster than Slicehost -- mainly due to my (inexperienced) rails config on that server. Heroku though, is much easier to maintain, and for a decent price (free until we grow a little more). Luckily we don't get enough traffic to warrant that yet, but 2010 is going to be a much more active year.
I admit, we've been a bit lazy on adding support for multiple browsers. My browser of choice, Firefox 3, is usually all I test in. For the most part this covers 99% of ArcadeFly, but that 2% must really annoy people who use the site in other browsers. Now though, the site should look the same in FF3, Safari, Chrome and IE7. I'm going to give it a once over in FF2 tomorrow, and consider supporting IE6. Since we're lucky enough to use JQuery, getting everything working in IE6 should come down to some CSS tweaks. With a full 20% of our visitors using IE6, this is something we'll definitely be seriously considering. If you come across any layout issues in any browsers other than IE6, please comment on them and we'll do our best to fix them up.
We recently fixed most the bugs currently on ArcadeFly. There's a few in the works, but nothing major outstanding. We recently upgraded to Rails 2.2 with Passenger instead of Mongrel. Things are really coming along though and become stable enough to build on. We're planning on expanding out to some new features in the coming weeks, but still looking for suggestions on where to place our focus. If you see any problems with the way things are now, please email me or just reply to this post. We're looking into some better ways of tracking bugs, but the free ones don't seem to compare).