I always test my sites in the latest crop of browsers – FF, IE, Safari (Mac and Win), Opera. I’m still supporting IE6, unfortunately, but once IE8 comes out I may put a stop to that. Mostly I don’t find it too horrible; a few conditional comments usually take care of whatever issues pop up.
I was invited into a Fundable group for an annual Browsercam account and just got word that I was one of the last two that made it in. I find Browsercam to be really convenient for Mac testing since I don’t, at this point, own a Mac. (When my Dell laptop finally dies, it will be replaced with a Mac).
I know there are some pretty good free browser testing sites out there now, but when I only have to pay $25 as part of a large group and I get remote access to live machines, I can’t really pass that by.
Here are a few of the free browser testing URL’s: