My forum is generating revenue via private ads on the sidebar and a Premium group, I've never thought about Google Adsense because of AdBlock.
My site is receiving 30,000+ sessions on Google Analytics, 350-400 logins every 24 hours. A fair few users buy Premium for the name colour, banner, etc however there isn't a huge incentive. How much would you estimate I would make monthly from adding Google AdSense and would it look bad / annoy users?
Premium users ($10) would not receive Google Ads, which is another incentive. I would be putting it in: ad_thread_view_above_messages, ad_forum_view_above_thread_list and possibly right in the footer so it's not very obstructive.