Probably being pedantic, but this is not buying Friendster to be precise, usually what is meant by that is that the company was bought.

In this case the domain Friendster.com was bought, and a trademark was conceded (a new different trademark), I don't know precisely the implications of the trademark though, I think it's a different trademark and you still cannot imply that you are a continuation of the previous trademark holder, it's just that you are given monopoly over that word as a trademark.

Now, is that different than buying "Friendster"? A really interesting legal question, I think it is, and I think it has relevant implications, I don't think you can for example restore the website as it was and pretend a continuation as you would if you bought the company.