Hi
I am not sure about the forum at all - personally I don't think people will use it, even though in principal it is a good idea. Offers tend only to be around for a short period - a month if lucky... so there is a risk it could become out-of-date quickly and potentially for you there would be alot of clearing up of old stuff to make the new offers visible to users. Users will become dispondant if they pursue an offer that had already expired 2 months ago.
To make it work you would need a motivated group of registered users (and lots of them) who would keep the forum up-to-date.
Most of the affiliate networks display which merchants have offers, and this may be a good alternative. You can post these offers into the relevant category pages and/or onto your home page. I personally think that would work best.
An idea to make this easy would be to create an borderless iframe in every page, that if left blank would not be seen. Create a file called /offer.htm and set up a scrolling marquee of offers and links. Add the links as you find them on the affiliate networks and remove them when expired. Simply add a short description i.e. Debenhams 20% off all clothing...
MORE offer ends 30th Sept : Next offer, blah, blah, blah...
MORE offer ends 12th October : etc, etc, etc... - adding the expiry date of the offer will prompt you to remove it when done with.
This way you can make one change in one file (offers.htm) and display throughout the site.
All the best
Phil
p.s.
www.omguk.com - specialise in financial products mainly that pay £££s per lead/sale... really excellent network to sign up to. Also, they offer a directory service that is actually espotting results - so very extensive - that pays per click and is a great money spinner... the simplest way to implement this into a site quickly is into an iframe.
p.p.s. another good network is
www.smart-quotes.net - they will co-brand you a credit card / loan / insurance comparison engine in the exact style of your site for free - see
HERE for credit card link on my site as an example - their rates are really good. Also see what they did for me at
www.quote-engine.com