A blog is not a blog unless…

Robert Scoble says a blog is not a blog unless there’s five things.

1. Ease of publishing.
2. Discoverability. (Pings weblogs.com or technorati or another ping server).
3. Conversationality. (Trackbacks or as-they-happen referer logs, or now being part of Technorati and other blog search engines).
4. Linkability. (All posts should have permalinks).
5. Syndicatability. (All content should be available in RSS feeds).

I agree with Robert that if you ain’t got those five, as well as comments, which I presume Robert would include in ‘conversationality,’ then don’t call your stuff a blog.