I have a mac..my pictures in iphoto are perfect size..but when I upload them to facebook they shrink? :puzz Any ideas?

Check your pho0tobucket upload settings, that may be the culprit. On the screen where you can upload, right above the fields to search, etc, there is a line that says upload size

I don't use photobucket...so maybe facebook does the same thing? I'll have to look. Thanks!