When you read startups' blog posts, launch announcements, monthly checkins, funding announcements, postmortems, etc., in which they share their numbers, which metrics do you find most interesting and useful? Growth/retention rate? Website traffic? Revenue/profit charts?
Are there any metrics that don't normally get included in the standard rundowns, but which would be especially interesting or insightful? I'm thinking mainly of tech- and web-based startups, but this could apply to a broader category of companies than that.