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Too much viral video can make you sick. And your computer, too. CollegeHumor, Barry Diller's funny-clips compendium, has been caught infecting viewers with at least two categories of virus, Generic.dx and JS/Wonka. They're mild but annoying infections — the chlamydia and gonorrhea of the online world. One expects to find Trojans littering CollegeHumor's offices, not its website. The likely source?

CollegeHumor is probably hawking unsold ad space to low-rent online ad networks, which opportunistic hackers use to spread viruses and infect PCs for more profitable ventures like sending out spam. Careful, Barry: Going with the cheap guys can be unsanitary.