Add-on Most Enthralling Add-Onn to help kick-start a new forum?

[OverHere]

So, which, (1), single add-on would you folks recommend is most tantalising to help kick-start a new forum?

I mean, to new guests visiting a new, given forum for the first time, which single add-on would make them 'stick' around?

I now have several finalised add-ons on my upcoming website Satisfy.tv but I am looking for 1 additional add-on which will assist me in kick-starting my forum...

(Generally speaking, in terms of newly launched forums).

Thanks All...

 

[Flexin]

I can't think of one add on that can get a guest to sign up and stay by itself. Content is the 1 thing you can add on a new forum that will help get people there and maybe to get some to stay.

James