Admin what exactly happens when i link my twitter and google accounts?
Once you've linked them, you can login to the forum with either of those accounts. It's probably more useful for people when they first register, you can just sign up using your google/twitter account and not have to fill in the registration form.
If you link a twitter account, I think you can make it so any status updates you post on here are also posted on twitter. The status thing over here is a bit useless in it's current format though.