- Google Trends - search patterns and trends.
- xinureturns - search engines, social bookmarking results aggregation.
- quantcast - Internet ratings
- alexa - traffic and changes
- analytics - keywords / traffic source / visitors and more
- compete - advertisers like reports from compete
- search-directory - categories search tool
I’d like to say a massive thank you to the guys developing these fantastic search engine optimization tools, which make our life much easier.
Matt