In the days before the Internet, many investors found their best buys among small stacks. Today the investment world is topsy-turvy and many tiny companies have gigantic capitalizations. Small caps-typically those with market capitalizations less than $1 billion-are pretty well neglected. Web sites devoted to these stocks provide news, research and company information. But beware-a number of sites collect fees from the small companies for coverage that may look like editorial. So, please read the footnotes.