I'd keep the archives open on your site. An archive that large and that old will continue to drive traffic (and ad revenue..?) for some time to come. This shou

I'd keep the archives open on your site. An archive that large and that old will continue to drive traffic (and ad revenue..?) for some time to come. This should preserve your page rank a little longer than just letting the site die and it gives you time to consider your options. You could find someone interested in running the site where you retain ownership but share profits from advertising. Or you could outsource moderation. As others have suggested, re-establish the rules, then look for a freelancer to moderate the forum for you. If you've put 10+ years of your life into this it would be a shame to let it die. Sometimes that's the right choice but why not wait a few weeks/months and be certain if that's what you choose to do.