You can use Dandelion as an iviv mobile client. Post what you think right from your phone! You can find it in the F-Droid store!
Use chat client
You can use any xmpp client for chatting with your friends wherever you are! Of course you can use our facebook like chat after login on the right side of the screen.
Be who you want to be
A lot of networks insist that you use your real identity. Not iviv. Here you can choose who you want to be, and share as much or as little about yourself as you want. It really is up to you how you want to interact with other people.