Greg, we thought it would be fairly self explanatory... But see the post I mentioned earlier in this thread.
http://www.terraforums.com/forums/carnivorous-plant-trading-post/139945-nepenthes-dubia-jamban-rooted-cutting.html He did not post any requirements and just relied on "for active users" to know if they qualify, these are the first 5 to sign up for it.
First post: joined august 2015 and has 34 posts ~7 in give aways
second post: has been here since Nov 2014 and has 42 posts ~13 in give aways
third post: J.Gennaro joined May 2015 and has 7 posts ~3 in give aways
fourth post: viking, joined October 2015 and has 5 posts ~4 in give aways
fifth post: plant#1 Joined April 2015 and has 29 posts ~9 in give away
Now, I only glanced so these may not be exactly accurate, and are the other posts amazingly informational and participatory? I don't know, I didn't look. But I don't think if those were MY stats, I would exactly consider myself as an "active member". And that's why we felt the need to add on that people wishing to use "Give Away For Active Members" should specify some type of requirement.
Remember, that YOU get to pick the requirements, we wanted to leave that up to you, we did discuss making up our own "what makes you "active", but deiced not to. Since as some point out, they may not want to go by post count, or time on the forum. You get to put in your own requirements, for your giveaway so make it whatever you think makes the eligible for your giveaway. Or post it as a normal Give Away and let it go to whoever! =)
Andrew