There are several chart tools, Yahoo!, Google, MSN, your discount broker (E*Trade) and on down to your great grandpa's old ticker. Wikinvest does one different, and that is user generated content.
Yes, users can write articles; they can also create sentiment (bullish, or bearish), as well as make comments on charts. Articles are nothing new to the internet foray, but sentiment gives you an idea of what direction that particular stock, or sector might be heading, with the ability to agree or disagree and create a BS meter.
The charts help identify price movements in the stock, whether be it by company event or outside news. Those interested in finding out the whys behind their favorite stock should investigate Wikinvest, or those wishing to contribute to a community, this is an excellent place.
This is a sample chart, from Lehman Brothers.
It's not just about mystics of Technical Analysis. Nor is it Fundamental Analysis, somewhere inbetween is Market Analysis.