Before rapidsha... ahem, I mean RS started this SEVERE speed throttling, they had the cat captcha. There were random numbers/letters.. and behind those were barely visible cats or dogs. You enter the three or four things that appeared in front of only the CATS.
It was... interesting. In a bad way. This speed limiter thing is nice cuz now I dont have to wait at ALL between downloads. Or renew my IP.
Honestly, why do so many people upload to RS? Half the service is just people putting their pirated crap there only to be taken down in a few hours.. the other half are people who obviously dont know the alternatives and put all their private crap on thar. Ah well, no real loss.
If you think they're annoying, try logging on in MapleStory. Random numbers on a keyboard and you have to click your 4 digit security code. RIGHT AFTER YOU ENTER YOUR DAMN USER/PASS! Are bots really THAT bad on there? Sheesh!