What we found in opening up Tiny Review to other login options was actually pretty civil. We haven't seen much offensive content at all, nor spam. It might be that we're still small yet, but I think I agree with you. Letting people refine their identity for a particular site usually frees up their expression and you get good results. While you're small, it's not a problem. Once you scale enough to have a large userbase, you normally have the time and resources for content moderation.
What we found in opening up Tiny Review to other login options was actually pretty civil. We haven't seen much offensive content at all, nor spam. It might be that we're still small yet, but I think I agree with you. Letting people refine their identity for a particular site usually frees up their expression and you get good results. While you're small, it's not a problem. Once you scale enough to have a large userbase, you normally have the time and resources for content moderation.