Caesars Interactive will soon enter the online gambling ring with its World Series of Poker site at WSOP.com. It’s the second fully-legal, pay-to-play online poker platform in Nevada. The site goes live at 9:19 a.m. today, a play off its release date. The buzz leading up to the launch is undeniable: more than 12,000 players already have signed up. This is all coming together a mere four months after Station Casinos rolled out their Ultimate Poker, which was the first real money, regulated site in the state. After four years of development, Caesars‘ all-star team of programmers and online specialists…