You guys need to remember that a 10k scrapebox blast are not instant links like a 10k xrumer blast. Most blogs are moderated, not autoapproved, and are nofollow. On a 10k blog blast, you may only get 5 autoapproved links if that and probably nofollow. The rest will either be held for moderation or caught by askimet. If they weren't caught by askimet, then your only hope of getting approved by a moderator is if you have a decent comment.
However, this doesn't mean scrapebox is useless at all. You can still boost rankings with that information I just gave you. You just have to do a little more work to get a good list. If you scrape by niche, a generic comment about the subject may be just enough to get your comment approved.
I use scrapebox to come up with really good lists that have good PR and are D0F0ll0w. I do some manual posting to ensure that most of my comments are approved then use pingler.com on them once they are. Think about it. If I got like 10 PR7 D0F0ll0w comments posted vs 10,000 NA no follow blogs I mean I'm basically just causing a nuiscance, wasting time, and unproductive.
With that said, you could also just keep blasting a dummy comment until you come up with a large enough autoapprove list and then blast your real site on the new autoapprove list.