Believe the last guy that did this type of give away,was just working the membership for trust and a bigger scam.
Let me go look and see if I can find it...
https://bitcointalk.org/index.php?topic=1360268.0Found it..WOot!
Think a member before that as well but not sure,its a common way to establish ones self in the community quickly.
Believe what you want, I do these giveaways because I in general like helping people and giving; the bitcoin community as a whole is skeptical of anything anyone does that does not benefit themselves becaus3 they thing they're working and angle, surely there can be no good hearted person in all this forum? Wrong, I don't so this for trust I do thsee for fun and because I enjoy it.