any one know it???
It's closed on signup only; you have to specially request it in the Free Hosting forum, and as long as the required ad-code is present on all visible pages they'll set you to ad-enhanced.
The reasoning for this is simple - there was way too many people signing up for ad enhanced, never putting the ads, then getting suspended within 2 weeks for lack of ads. Now you can't get it -unless- you already have the ads