Put me down for one if you decide to produce some Tony, great way to advertise the site.
We performed an experiment at my angling club with car stickers, a direct result was to increase our membership, we only put the web addy and club name on it, but when you are in a traffic jam chances were that another angler would at some point be stuck behind you and see the club being advertised, we only gained about 10 members but we covered our costs and put money in the bank, we asked people when they joined where they had seen the club advertised, and the answer we got was "saw it in a car window", it put £ 750.00 in the coffers, still we were lucky as one of our members has his own printing firm, so we paid considerably less than the going rate for them which helped no end