it's usefull
Yes , there are legitimate uses for pastebin specially when one's debugging and using IRC to chat with knowledgeable folks .. pasting 100 lines on an IRC channel is not the right idea , you post where people ( not just one ) but where a wide number of people can read and check ( error logs , crash dumps etc ) and that would be on pastebin and similar.
Trying to kill their site is not the right idea . It will only make things worse for the lot of legitimate users and programmers that try to solve complex problems.
But then again .. follow the money trail ..
