CNBC is reporting that Zynga could file paperwork for an initial public offering of stock this week. The social media powerhouse hopes to raise as much as $2 billion from the IPO. Morgan Stanley will lead the deal.

According to the article, some industry estimates place Zynga’s value at between $15-20 million after the stock offering is done. That would make it even more valuable than Activision Blizzard, with an estimated value of $13 billion.

Zynga and AT&T announced a partnership today that will give AT&T customers exclusive access to Zynga content. Later this year, Zynga’s games such as FarmVille, Zynga Poker and Words with Friends will become more visible in AT&T’s place in the Android Market. This could help to make the already huge Zynga even bigger.

Manny Anekal, Zynga’s Director of Brand Advertising, made headlines at the South by Southwest Festival by declaring 40-year-old mothers as the new hardcore gamers.

AVG is hoping to tap into FarmVille addicts an attempt to sell some antivirus software. It knows anyone who’s into social games love special freebies. Those little incentives can be a neat little status symbol, and sometimes adds a new function or bonus to a game. So it wisely decided to bundle its discounted PC Tuneup with a free FarmVille biplane from February 24 – March 2, 2011…

It’s safe to say this CityVille thing has caught on with the folks using Facebook. The game has surpassed the 100 million monthly user mark.

Even more amazing is the game is barely one month old. The former most popular Facebook application, FarmVille, is sitting at 57 million monthly users. Social gaming powerhouse Zynga created both of them and currently boasts more than 200 million monthly users.

How are you going to keep them down on the farm once they’ve seen the big city? FarmVille’s reign as the most popular game on Facebook has ended. CityVille is the new social gaming phenomenon, reaching a ridiculous 84 million monthly users recently. That narrowly edges FarmVille’s highest number, 83.76 million monthly users, posted in March 2010.

FarmVille is getting into the Christmas act with the return of a popular giftable item: The Clumsy Reindeer.

See, he’s got Christmas lights tangled in his antlers. Hey, I’m not one to judge Santa Claus but maybe somebody should get the little guy some glasses instead of making fun of him. I’m just saying. He was a 2009 holiday themed gift animal and is back for a limited time. He appears in your FarmVille tab as an item you can send to friends. Get them and give them before the holidays are gone.

Yesterday’s discovery of a massive Facebook information leak has prompted one individual to file a class action lawsuit against Zynga. Zynga is one of the companies whose programs were found to be leaking user information to third-party advertisers. Three of Zynga’s games including FarmVille, FrontierVille and Texas HoldEm are all accused to sharing information about users and their friends to advertisers without permission.

Labor Day is the day when most of us get off a day off work but that doesn’t mean we all have to slack off in the process.

Just to keep you in the “working” mood, I have picked out 5 labor-intensive games that can be played this Labor Day (September 6, 2010). Too bad you won’t get paid for it…

It will be time again to beg, borrow and barter for nails and other building supplies in the world’s most popular social game. As revealed by this mysterious FarmVille image (above), you’ll soon be able to raise your own pigpen.

FarmVille is full of animals between the ones you’ve raised yourself and the ones that wander onto your farm. Some are looking for a home, others get lost and need to be led back to a friend’s farm.