[someonesomewhere]

I respect Dark's opinion, but I tell you, it takes a great amount of skill to throw it in someone's general direction if they are moving in circles around you with the speed of a commando. It also helps if you don't lag, either.
But he's right about everything else; the freeze time and the recovery time, I mean. It is simply easy to at least not take damage from someone by making them back off. And pipebombs probably have one of the most random damage bases in the history of mankind; If the initial blast misses, you can still take 70+ damage easy from getting bounced off of the explosions >.<