Nowadayas, User-bars are so populer among teens. User-Bars are small grafics for forum signature, which help them to show a tiny bit of their personality in an attractive way. I am what my brand is...
For example, if you love adidas and you are keen coke drinker, you can use them as your forum signature


i think user-bars are very inspireing for brands to help people self-express themselves with brands. There is huge opportunities
here is a link to userbars.com [1]
via marketallica [2]
Links:
[1] http://www.userbars.com/brands.php
[2] http://marketallica.blogspot.com/2006/01/gen-dnyasnda-son-trend-user-bar.html
[3] http://technorati.com/tag/web & banners