I think nitro is being sarcastic.
But it really depends on how good your facebook acounts are, how good your proxies are, if you've joined groups. Basically looking like a proper facebook user.
If its a new facebook account i wouldnt reccomend adding more then 10 poeple a day on it. But if its an ages account then the amount is up to you. about 40-50 a day i would say.