Show number of comments over time

[collinanderson]

Would be nice to see number of comments over time, similar to number of upvotes over time. I realize that there are hidden and dead comments, so it's not a perfect number, but getting a rough number over time would be pretty interesting, especially if the number of comments might affect the ranking.

[johnwarden]

I agree that could be a nice feature. To add this, we'd need to add a DB column for the number of comments, modify the crawl to write this value, and then add a chart to the stats page.