I think you had received cheque previously.It was Rs.1000 initially and now it is Rs 1500. But for active members Rs 750 also was allowed.I don't know whether it is in power now.
Yes abid is correct! if you are active in forums and reached 750 you can send a mail to This email address is being protected from spambots. You need JavaScript enabled to view it..
The minimum payout is Rs. 1500. You can also change it to more amount at your wish.
But in the recent times, for the very active members, the minimum threshold has been made to Rs. 750; only if requested.