Your service may be valuable, but if it is REQUIRED by someone to do their work then you can't get away with requiring them to change browsers. >With adequatel

Your service may be valuable, but if it is REQUIRED by someone to do their work then you can't get away with requiring them to change browsers. >With adequately modern browsers being available for Linux/*BSD/etc and XP, and being free, faster, better and more secure, you don't have to have any sympathy for users sticking to old IE versions. Sure you do, when you want to have happy users. If even a minority of your users are older/non-technical, asking them to change browsers to view your site (which they may be required to use for work) is a great way to get them to hate the damn application, provided they can even figure out how to change browsers in the first place. It makes complete sense as a designer/anyone concerned about security to force people to update their browsers, but don't forget that to the 60 year old used-to-snail-mail grandma that can totally ruin the experience.