It’s amazing that so many people in this day and age (of rising mac popularity, iPhones, Firefox usage) would choose to limit their web site and require only Internet Explorer.  For instance, with the virtually unlimited number of online print shops, Staples requires a Windows computer running Internet Explorer.Here is the error page:  

Interestingly enough, I would expect the message to say something like “Sorry, we still have our web development team from 1990 who is really good at Visual Basic.”  Instead, they’re taking the “act natural” approach, as if this is something you should expect from using the internet.VistaPrint seems to be at least mostly in touch with this whole “internet thing”.  They require at least Firefox:

Does anyone know of good print shops online that let you use Safari?