Netscape's "View Source" opened it that Netscape viewer instead of Notepad or WordPad. When the Netscape window is resized, it refreshes the site. But it tends to do it incorrectly, and displays it's layers in odd places. When you make a website, Netscape doesn't follow implied table sizes. You can't reposition the menus/toolbars. Under Linux Netscape, I can't view pages that render fine under Windows Netscape.
I don't know if these things are fixed with Netscape 6, but I prefer IE5 to Netscape 4.7. Netscape's second though. I heard that AIM incorporated with NS6 - I rather it not.
Mozilla is much slower than Netscape - at least when it loads my school webmail.
Konquerer takes forever to load my school webmail - actually JavaScript in general.
Opera crashes when it loads my school webmail. Otherwise, it's good.
Netscape and IE do a good job on my webmail.