For a quick overview of a public company, Google's service, Google Finance provides an excellent performance summary of a company, its stock market performance and key financial ratios. The site is loaded with links to other sources of information on the company and it provides historical financial statements from Reuters. This is not an in depth profile, but, like Valueline or Standard and Poor's tear sheets, Google's new service provides the most important facts about a company.
Thats odd googles search for their finance page is very similar to EquityGroups.com search feature. Not much in the way of originality!
Never the less, I think the site is well designed, and presents the data I need in an easily digestable format.