Don' know. I got 2 sign ups on new blogs...but who knows where this customers came from, may be from Twitter or Facebook. Anyway I have 20 000 pageviews just from my sibreddits for last month (2 subbreddits are 1 month old and 2 are few days old). All linked on my resources(blogs, couple links on CJ). I have may be 50 000 pageviews from another subreddits, but most links got deleted by subreddit owners (that's why I started my own).
Every time have new post - I post it on Reddit.
They click on Plugrush banners
(see my sig)