Personally if I write some comments anywhere I prefer to log in with twitter (Twitter is great platform). Disqus has some advantage, that I can check my comments anywhere on one place and I don't need to set up ''notify'' under every comment so I will avoid boring email notification. Anyways I don't like much Disqus on other side, bc. its somehow still slowly and on some sites loading takes some time. Post comment in tavern takes some time too. Log in somewhere with wordpress.com is really not my favorite thing. I think core comments are great and probably the best solution for small or maybe medium sites. For more users, more comments it depends ... Anyway this post and comments below proof that wptavern is great source of informations, where author have enough freedom to write even ''agains'' owner, can put different opinion without fear. It just showed, that both - owner Matt and author Jeff are on right place and do their jobs well. Thanks them for that.