1. Cell phone radiation levels: For a phone to pass FCC certification, that phone's maximum SAR level (Specific Absorption Rate, a way of measuring the quantity of radio frequency energy that is absorbed by the body) must be less than 1.6 watts per kilogram (2W/kg in Europe). This extensive guide lists the SAR level of almost every cell phone out there in the market. You can view phone models by manufacturer or get the top 20 lists. Check this out before you buy your phone.
2. 1 billion Firefox downloads is only a part of the story. 1 billion downloads since version 1.0, almost five years ago, isn’t a very big number after all if you consider what Internet Explorer 8 has achieved. IE 8 has been downloaded more than 200 million times in the last four months, not including updates. That’s 3 times faster than Firefox. And Microsoft hasn't even begun pushing IE 8 through update. Think about it.
3. abitbit.com: A crowd sourced random number generator?
4. Create animated GIFs in Photoshop. Never knew it was possible.
5. Cosmetics Database: What harmful chemicals are there in popular cosmetic products? A searchable database consisting of hundreds of different products from dozens of manufacturers, including top brands. A site you must forward to your wife/girlfriend/mom/any female.