Would you guys use it?

I use my IPad all the time. Much easier than the laptop.

I have a Droid and I surf ter with it. It work fine on my Droid. The mobile version is ok. But an app would probably be better.

But it's a little hard navigating on the mobile version.  Moreover, we don't have access to the discussion boards on the mobile site.  I'm wondering if we should petition TER for creating an app.

The full version works fine on my Droid.  The only problem is I have to move the screen around.  But it still works fine.  I can read and post on discussion boards on my Droid.  So I'm not sure if it's a strong enough case for ter to make an app for it.

they do not approve apps with adult content especially illegal one..

Ter doesn't need to put the app on the market. They can just make the app available on this site for download.

I concur.  There are several apps for Android and the iPhone that are NOT on the official Android/iPhone markets.  
I'd be more than happy to pay $1.00 to get a TER app on my phone.