I've been corresponding with a Linux user in Brazil over the past week who's got similar problems. He runs a set of Internet Cafes, mixed environment, some Windows, some GNU/Linux. The major problem is that sites are being designed, intentionally or otherwise, in such a way as to exclude non-MSFT platforms. In some cases, token support for Netscape 4.x may be present, in others, it's strictly a case of MSIE on legacy MS Windows only. Would like to post an abstract of the comments at some point here.