Any limit?

@owlwings already reply to your questions. Here it's not even necessary to write every day to earn, what is more important is to interact with other people.

No.there in no such thing

There is no limit to the number of discussions you may post nor any upper or lower limit on the number of words but there are restrictions on the KIND of things which are considered good discussions. Please read the Community Guidelines to find out what is NOT considered a 'discussion' (and will very likely be removed if you don't observe the rules).

There's no limit in discussions.