ogletreeseo.com —Ogletree describes a great way to employ Google Adwords to track if your competitors are actively performing SEO by placing bids on typical 'SEO' terms such as 'allinurl:example.com', 'link:example.com', etc.
Digg is a place for people to discover and share content from anywhere on the web. Digg surfaces the best stuff as submitted and voted on by the community. Take the Tour to learn more.