I have been using G-Lock Blog Finder for about a year now, but was always frustrated by how long it would take to manually post comments. I have recently come across and started using Scrapbox, and it's a far superior tool, but lacking a few things I like in G-Lock's Blog Finder. Thus, I am now using G-Lock for finding my blogs to post on. The reson for this is I can ensure I am only seeing d0f0ll0w blogs, and also I can specify the PR of the domains (I go for PR3+) and the URLs (I go for PR1+) to ensure my posting efforts are giving me the biggest benefit. So each of the URLs I"m getting out of G-Lock are keyword targetted, have a domain PR of 3 or more, have a URL PR of 1 or more. The reason I go with a URL PR of 1 is that there are a lot of PR5 and PR6 domains with low URL PR's. These may well increase in time. So, once I have my URLs from G-Lock, I just copy and paste them into Scrapebox and let it do the actual posting. Obviously you need to buy both Scrapebox and G-Lock Blog Finder, but nothing of value is free!