Well, it's Eli's concept and you know he knows everything and is never wrong!
I will say it's fairly unique; other than probably a few blogs by women, and maybe a few 'long nails' fetish sites, I don't think it's been done.
I love hands, especially nicely manicured ones with longish or long painted nails, VERY much (almost as much as feet, hair, legs, backs, butts, etc.)...
But, I'd understood it'd be a *separate* site, not somehow 'merged' with the pic database here. Or maybe it is and he just intends to share the server space for both sites but keep them separate. As @TRLB1 says, #timewilltell