For a long time the state of PDF in Firefox has sucked pretty badly. For a while I had actually abandoned Firefox for Safari because it was bugging me so badly (Firebug ended up bringing me back). Well, today I decided to re-install Firefox on my Mac and did another google on the issue and ran across Firefox-Mac-PDF. The project is reasonably new, it has only been around since June of 2008, but it has a lot of promise. As it stands today the plugin just basically adds PDFKit rendering to Firefox, no frills, but it does a great job. Given some time I'm sure it'll be as full featured as the implementation in Safari. I'm really excited to finally see my biggest gripe with Firefox solved. Now if somebody would do the same thing for Linux.