Best advertising solution for a forum (sports based)

Hi,
I have a Sports Forum which covers a broad range of the UK’s most popular sports, but the vast majority of users are discussing football (soccer). The forum runs on vbulletin and is quite similar in layout to digitalpoint.
Currently I am getting about 12-14k absolutely unique visitors per day with about 250k page impressions per day (about 7m-8m page impressions per month) and I have not yet monetized with any ads. Over 90% of all traffic is coming from the UK, with Ireland, Europe and USA covering most of the remaining 10%.
I have read that forums are notorious for low CPM rates because the users become ad-blind. This may be the case for me but luckily the users are also producing enough keywords to see quite a bit of randomly picked up traffic from Google. About 25% of all visitors are registered as ‘new’ or first time visitors by Google.
So […]

See original post by MickReid