Vegas Inc – Caesars Entertainment’s online poker website, using the World Series of Poker brand, will launch Thursday morning, company officials said today. Caesars Interactive will capitalize on the brand with online tournaments feeding into the company’s annual competition at the Rio that runs from late May to mid-July. The site, WSOP.com, will launch with a variety of poker games, including stud and Omaha hi-lo as well as Texas hold ‘em. And unlike its lone competitor — Station Casinos’ Ultimate Poker — it will offer Mac-friendly computer compatibility. Only residents or visitors to Nevada will be eligible to play, but…