I'd recommend you contact them and say you're a member who doesn't work for the site, who would recommend contacting us regarding sponsorship.
Trust me, I've spent a lot more time on UB than you guys know. In my free time, here's a
partial list of some of the sponsors I've contacted to see if they're interested in sponsorship. It's harder to get a sponsorship than you'd think.
-Prosuspension.com
-Praxis
-Chili Pepper Racing
-LeatherZ
-Matrix Racing
-Stop Tech
-ZKMax
-Autowerks
-Top End
-Auto Sports Unlimited
-Brake Pros
-Drink Holders
-Double 02 Bmw Parts
-Five-O Motorsports
-Lone Star Bavarian
-Lidatek
-Nav-TV
-Parts Quest
-RevHigh Motorsports
-Roadster Solutions
-Ronal
-Bimmerworld
-Bavarian Auto Recycling
-Zygmunt Motors
-Bimmer Zone
-Cobalt Friction
-Pelican Parts
-MPact Motorsports
-Road Race Technologies
-Ultra Microfiber
-Understeer
-Adrenaline Racing
-Euro Styles East
-Redline Goods
-Apex Performance
-Bekkers
-Speed Tecknik
-Bavarian Performance Group
-German Parts Online
-GetCoolParts.com
-mags4cheap.com
-Auto and Truck Electronics
-K&N Filters
-Euro Parts Direct
-Autoblz.com
-Mod Bargins
-Evosport / Powerchip
-Autohaus Arizonia
-Hoen USA
-Jaric Design / StealthOne
-Eurosport Design
-Follow up with edge motorworks
-Intercity Lines
-Lease Compare
-Teckademics
-Euroteck Motorsports
-Wheel Autohaus
-VIP Auto-fashion
-Premier Mobile Aesthetics Group
-Pure Motorsport
-Euro Passion
-Autogeek
-Strong-Strut
-Vertex Auto
-BavAuto
-Eurosport
-BMW Design
-Stealth Auto
-Understeer
-Racing Dimension
-Cosmos Racing
-Maximum Autoparts
-Speedy Car Parts
-Pelican Parts
-Autohaus Arizona
-Pinnacle Performance
-jlevisw
-Zygmunt Motors Online
-Pinnacle Wax
-Bimmer World
-BimmerZone
-ApexCone
-MMS Tuning
-M Motorwerks
-KO Performance
-Hoen USA
-BenFer Performance
-MPact Motorsports
-Supreme Power
-Road Race Technologies
-Adrenaline Motorsports
-Bavarian Soundwerks
-Max Velocity
-StealthOne
-UltraMicrofiber Products
-Wood and Wheels
-Diffs Online
-Turner Motorsports
-Euro Styles East (ESE)
-OCWheelwurx
-Design Rotor Technology (DRT)
-Edge Motorworks
-Evosport
-ModBargins
-Redline Accessories
-Rust Bullet Automotive
-Apex Performance
From this list, most of them replied to me and required custom replies.... that shows the amount of HOURS and HOURS I've dedicated to this part alone of UB.
I appreciate your idea, but I think it'd be more powerful coming from you as a member, than me as an admin.... because you have the freedom to suggest any forums you visit, but I'm slightly biased.

hah