There needs to be a 6 star rating, reserved for addons like this.
Every option under the sun, and if there's something it doesn't have, it generally gets added the next update.
Rock solid, and works an absolute treat.
So many various options to customise it, and then theres about 10 different areas you can have it display.
Our users absolutely love it, and the ability to link to threads means those who prefer to reply via thread can as well.
A premium addon, that's well priced, and from a VERY good developer with very clean code.
If you're starting out a forum and want chat, look no further, and grab his Easy User Ban and Username Change addons whilst you are at it. Both are excellent as well!