How many messages can I send a day?

Hi,

Oh, sorry, I write in wrong box. Can moderator delete this topic?

Sorry for my noob question: How many messages may I send a day without banned from FB?
There are 2 kinds of message:
+ send to my friends
+ send to strange people


Thanks for your help,

send to friends=as many as you like
send to strange people=30 aday to be on the safe side