Great social network for users, easy to access from whatever device, e.g. phone, tabs, PC - you name it.
I can't say that their upcoming changes in their privacy policy is something I'm looking forward to. I'm unlikely to quit it because of those changes, but I'm definitely hot too happy about it.
Also, their advertising sucks. Last time I tried using it for business, contact import wouldn't work and this was a well known issue back then. Hope it's fixed now, but I'm not going to use them as an advertiser any more.