2ndhub is another social network. The network is geared toward Second Life users. How much RL information one uses with 2ndhub is up to you. So, if you are into keeping you RL and SL separate, 2ndhub is catering to you.
I am unhappy with Facebook. I have an account for my avatar and wonder how long it will last.

I still like a couple of games on Facebook, but those are wearing thin now. I play only once per day now and have given up on Frontierville (too many ads in my face) and mostly given up on My Vineyard (same reason). Backyard Monsters is becoming more and more of a grind. Backyard does have a constant flow of new stuff to play with. But, it is a laggy game and doesn’t always work. I think it depends on the time of day…
Google+ is very nice and I love the state-of-the-art interface. But, because of their confused stance on pseudonyms and my use of Google Web Master Tools I canceled my Google+ account.
User Interface
2ndhub has a Facebook style interface. There are no new user interface features. So, use of the service via smart phone is likely tedious. Use via a desktop or laptop is clunky. The interface is cluttered. Everything is a drop down list or simple hyper link. Menus are standard link with a drop down.



