People think I'm paranoid because I refuse to store passwords in Firefox. Then vulnerabilities come along that make me smirk.
I've given up on using transparent PNGs for now.
By most statistics, more-or-less half of the users on the web use IE6. IE6 has horrible support for PNG transparency. There are workarounds documented on sites such as WebFX and A List Apart. Personally, I don't feel like using JavaScript unnecessarily and I had no luck with anything related to AlphaImageLoader to work while running IE6 through IEs4Linux. (Not sure if it's due to the emulation or just that the workarounds I found didn't actually work.)
I found a Firefox plug-in that provides an eBay Toolbar, thumbnails even for products whose sellers didn't pay for it and some other goodies. My bet is that within one month they'll be sued.
I tested out Microsoft's Internet Explorer 7 Beta 3. Other than playing catch-up by trying to clone Firefox features while guaranteeing web designers and developers more future headaches, what did IE7 accomplish?