A while ago a friend of mine (aperson) reccommended quippd and I never really visited it, It was just another site which I didn't visit and forgot about..
Recently they have started emailing me updates and so, instead of doing my usual thing and deleting and ignoring it, I went to check out the website. It's quite good, I like it. As a member I would describe it as like digg, twitter and reddit all mashed into one nicer looking site :)
Currently it's invite only, so if you want an invite, comment with your email and I'll wing you an email invite.