I've just set up a home banking account with a bank (ING) and I've asked the clerk if the account has browser limitations (as in "works only in IE" or stuff like that). As some of you might know about me, Opera is my favorite browser. So I've fired up Opera and tried to log in the account. Here's what I've got :
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Yes, you've read right : their web application has failed because of the user agent string. Pathetic.
Consider this a counter example for the applications that you develop. It's 2009, almost 2010. A web application must be able to run on any (graphical, i.e.: not Lynx) browser. Just as a side note Opera 10.00 (which I've been using in this case) passes Acid 3 test with 100%.