One of everyone's favorite popup advertisers is filing for bankruptcy.

X10 files for Chapter 11

The company that only last year billed itself as the world's largest online advertiser has filed for Chapter 11 bankruptcy protection.

X10 Wireless Technology, which marketed its Net cameras through a vast campaign of Web pop-under advertisements, made the filing on Tuesday in the U.S. Bankruptcy Court for the Western District of Washington.

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Advertisement Banners is by far the company's largest creditor, to the tune of $3.9 million, according to the filing. X10 owes Los Angeles law firm Sheppard Mullin Richter Ham $667,412; Microsoft $459,264; Yahoo $346,128; Google $69,984; and America Online $55,413. It also owes $95,047 to Overture Services, which was recently acquired by Yahoo. [ZDnet]