Company selling clones of web products (incl. airbnb, etsy, pininterest..)

Honestly, seems like a clever tactic to me as long as they don't wander into the realm of outright copyright infringement.

Think about it from the perspective of a freelance web developer: How many times have I heard "build me a Groupon clone"? How many times have I heard "build me Facebook, but <with this subtle difference>"?

From that perspective, it's actually a very clever and efficient way to attract a client base and not need to bash your head into your keyboard every time you receive a spec for a <business-name-here> clone.

That said--and I didn't look very closely at this particular site--infringing upon their technology is obviously unethical and wrong. Just my $0.02.

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Edit: It looks like they're actually labeling them as things like "Groupon clone." Clever, sure, but I think this crosses the line into infringement. I am not a lawyer, however, so someone who is more familiar with the subject should correct me if I'm wrong :)

This is definitely over the line of infringement. Pininterest? Really? The idea isn't too bad IMO, but the way they are going about it is.