Also, I’ve created a new category to house all of these lists, called Mashable Toolbox Lists (all previous editions now there):
17 Wordpress Plugins For AdSense
THUNDERBIRD TOOLBOX - 110+ Thunderbird Themes and Extensions
Wi-Fi TOOLBOX: 30+ Ways to Find Wi-Fi Hotspots
THE WEB FOOD GUIDE: 50+ Sites to Learn About Food
None of the links work.