Firefox extension keeps you from clicking NSFW links
If you're one of the millions of people who does some occasional Web browsing while at work, chances are sooner or later you're going to click on something you probably shouldn't. In most cases, you don't know what you're getting into until it's too late--a situation developer Pratham Kumar (maker of the now defunct 2View) has solved with a small and simple Firefox extension called No-NSFW (download).
Dangerous links are flagged as NSFW.
Once installed it will give you the heads-up every time you mouse over a link. You'll get a small warning in the lower right hand corner of your browser that either marks it safe (SFW) or not safe (NSFW) with color coding to match. If someone hasn't voted on a page, it's simply left unrated.
Other people with the extension curate the ratings. To vote on a site you're on, you just need to click the small eyeglass button right by where the warnings pop up and mark the page. Each time users vote on a page, those votes are tallied up--a number that will shift with the tide of its safety rating.
The extension works with both Firefox 2 and the latest beta of Firefox 3.
Josh Lowensohn writes for Webware.com, CNET's blog about Web applications and services. E-mail Josh, or follow him on Twitter at http://www.twitter.com/Josh. 
I'm not sur e I understand why Ksal005 is so worried about this not being christened by Mozilla, although I'm just a clueless user who enjoys FireFox in spite of some issues with websites and features obviously optimized for IE...).
I'll check this out, thanks for telling us!