News for hackers. Stuff that matters.
Re:Ask HN: A new way of online buying and selling. Viable? by svisser on Sunday September 21, 2014 @10:47AM (#8347277)
Not sure, they weren't always invite-only. You can find mixed opinions about them online. Things used to be more open but now they've put various restrictions in place so you can view that as you will: either they're very popular or things aren't going very well.
Re:Ask HN: A new way of online buying and selling. Viable? by tim333 on Sunday September 21, 2014 @11:29AM (#8347367)
They seemed to be going ok as of a year back:

http://www.ibtimes.co.uk/flubit-london-start-up-aiming-next-...

It's a little odd that they've gone invite only