My blog has the dubious honour of being the Number 1 result for a Google Image Search for tapeworm.
The blog post the offending image is at is Cracked.com’s 5 Most Horrifying Bugs VS Scott’s 5 Most Horrible Worms.
Here are the various stats for the two bizarre, high hits days:
I’m thinking some school or college must have given an assignment on tapeworms to its legion of students, who then Googled for images of the horrid monstrosities. Or else some sick news report on tapeworms got the public’s attention.