I love when friends post games they've played online, but I found it frustrating that the conversation stopped there. The only way to respond to the game is to leave arcane comments like, "At move 151, I think k13 is a better alternative..."
So I created GoKibitz, a place to post games that allows per-move comment threads. You can browse through game records, comment on moves that interest you, suggest alternative variations, and ask questions.
GoKibitz can be embedded via iframe into blog posts, and it's easy to share links to specific moves and conversations.
We're still in alpha, which means that there are still a lot of changes, and there are still some bugs. But we have an active community of players already having great discussions about games. Come join us!