Wikipad recently signed a deal with Gaikai, enabling the device to stream games. It will also play games from Nvidia's Tegra Zone. The gaming tablet will be available for $499 on Oct. 31. GameStop bega taking pre-orders for Wikipad on Friday. The chatter on Main Street (a.k.a. Google, Yahoo! and other search sites) is always of interest to investors on Wall Street. Thus, each day, TheStreet compiles the stories that are trending on the Web, and highlights the news that could make stocks move.-- Written by Brittany Umar.