as said in previous post an idea for giveaway could be to give a % of BTX to all wallet that have a minimum of X BTX (i.e. 30 btx) but with the particular condition of no transactions in last 10/15 days.
in this way:
1- you will also cut out the mining address and exchanger addresses.
2- the request (and price) will increase because people will store as many btx as possible to get the %.
3- attract new user because the dev is assuring (or anyway tring to assure) a fair play system for giveaway.
4- you will cut out the shitty splitters that made transaction only for the giveaway in the last minutes/hours
so if someone collect some btx (suppose 50-100) he will store them in a new address (avoiding to wait 10/15 more days transferring to his main address)

and for who say that waiting the 10 days could be a negative thing consider that it is a negative thing for all (and let's say... is it really so much waiting 10/15 days?)