In case you are in charge of making sure your library web site is compliant with the various browsers that our users have, here is a story in the December 10th Information Week that might be of interest. Penn State Tells 80,000 Students to Chuck IE
http://www.informationweek.com/showArticle.jhtml?articleID=55301109
(I learned about this story from Patricia Anderson, on the Medwebmasters-L list.)
I currently use Firefox http://www.firefox.com/ , and Safari http://www.apple.com/safari/ on both work and home computers. Some library electronic resources have a ways to go in order to be easily accessible on those browsers, however. With news like the article above, I am sure that distance education and eresource vendors will have to address the 'alternative' browsers, or lose money and/or users.