It's a scam!There's a link around saying that if you get 9 people to be invited, you'll get free Premium Membership. I've been told by :iconsodormatchmaker: that it's been a scam by a hacker. Be careful!
If you see a link going around about getting Free DA Membership, It's FAKE, Do not click the link, it may contain a virus and/or a key logger.
Spread the word.