I found myself asking the same thing, so I checked Alexa (I'm certain there are better sites to check these days). It was rated #8546 worldwide (#9215 in US) in a fairly steady decline since its peak around #4250 in November of last year. Those are "okay" but unimpressive numbers, and it's pretty much been steadily dying. By comparison, a specialty news site like torrentfreak.com is #3808 globally (#3012 US) and reaches the top 2000 when stuff is hitting the fan.
Sharebeast's user base (by IP) was 25.7% US, but 21.4% Indonesian. UK (5.3%), India (4.7%), and Saudi Arabia (4%) also had "significant" shares. The most popular search terms leading to it are not English terms.
As I said, I'm sure that there are better sites for domain metrics these days, and I can't even see most data Alexa lists because I don't have an Alexa Pro acct. I'd welcome better data from anyone who monitors domain metrics regularly/professionally.
But it really doesn't look like the Feds took down any sort of powerhouse, more like a dying target of convenience (unless they were really worried about Indonesian piracy)
(Incidentally, I was surprised to see Alexa report that slashdot.org (#1672 globally, #1272 in US) gets 40.6% of its visitos from India (where it ranks #302) but only 29.4% from the US)