Its not the Q that should we or should we not ban orkut or even any such websites.
We must accept the fact that Democracy has given right to express but certainly not what ever we like or dislike. Otherwise we may start talking anything to anyone.
The lates raid by Shivsainiks on Cybercafes is because certain people (users of Orkut) have cross their limits of writting.
Do not write anything howso ever it may be true on public usable platforms.
In case if you wanna say so, restrict it with people whom you know.
If we do not control our feelings then we will turn out to be Society of Animals.