Today's AOL is much different from the company once known as America Online, which got big in the 1990s by selling dial-up Internet access and then used its inflated stock price to purchase Time Warner.  AOL, which is currently worth about $2 billion, is trying increase it's value from running advertisements on its portfolio of Web sites.  The sites include the AOL.com home pages, Mapquest and tech blog Engadget. AOL isn't keeping the entertainment site TMZ, which is staying in Time Warner.