We've just added a top sites list on hardcorereview.net.
Links show up instantly, valid recip link required.
http://hardcorereview.net/topsites.php
In the next week or so this will extend to offer 1:10 traffic links from our homepage for the top referrers on the list.
We haven't done too much extensive testing, as this is coded to count only uniques in/out. Please add your site and help us test.
Email
hcr@hardcorereview.net with any issues discovered. Thanks.