At last estimate there were some 200 ad networks in the online display advertising space. Today, there are 199. Jellycloud, the “highly differentiated behavioral ad network,” has finally undergone the ultimate differentiation: It’s shut down. The company–which in past lives was known as Gator and Claria, two names synonymous with spyware–did indeed close last weekend, returning to investors the $11.5 million in venture capital it raised in April, sacking its 36 employees and calling in the asset liquidators.

Oddly, the Jellycloud Web site still sports a “We’re hiring!” message. Perhaps the company’s leadership is already hard at work on its next incarnation. …