The only account I bothered to purge all the comments prior to deleting was the 10 year old account that I used to post all of my OC articles. The rest I just deleted. I'm not sure it achieves anything but if anyone used reddit anything like I did, each of us just reduced the number of active accounts on the site by 5 or so.

I know I'm kidding myself but I'd like to imagine total number of active accounts is one of the metrics being used for valuation during their IPO and they're currently scrambling to explain why it just keeps dropping.