My site ranks #2 for a keyword and with all the content that's included, its a forum. If I put adsense for domains would the serp go down since all the content is gone?
one gets the SERP for content only and if you remove the content just for adsense for domains i think this will prove negative for your site - also if your site is listing so well - why dont you directly earn via normal adsense? hope it helps...
If placements are good as you describe, why not use existing Adsense content just to earn his way? It would be more effective... I'm also pretty certain that the serp will not remain if the site content.