These charts will look similar, but not identical, to the share price charts you can pull up on Yahoo Finance.

On a typical day, the 8,445 message boards of Yahoo Finance - each devoted to a particular stock - receive tens of thousands of messages.

There were no explicit rules on Yahoo Finance, but there were constraints.

By comparison, the top-ranked site, Yahoo Finance, drew 9.8 million viewers.

Yahoo Finance delivered 2.1 billion impressions.

Nirav clicked onto Yahoo Finance, checked a few stocks.

Or it could go to Yahoo Finance and automatically look up the current stock price of a ticker symbol.

The information may also be on Yahoo Finance and Morningstar.com.

The largest business site was Yahoo Finance, with 12.2 million visitors, although other financial sites often choose not to compare themselves with large portals.

It's powered by Yahoo Finance, so the quotes are not real-time.