Hi, there's only about 5-6 engines that I'm consistently getting successful submissions on and there are some that fail every time. Obviously the more diversity the better and I don't want to be submitting to the same few sites all the time. The engines that I've never had a successful submission on are (from the first set of engines): tumblr, blogymate, kiwibox, mywapblog, postbit, tripod, and most of the engines in the 2nd. set seem to be patchy at best.
I have 10 private proxies (tested, and all good), 5 fresh yahoo email accounts, and have captcha solving set up with Deathbycaptcha. I'm also running just a single project with 1 thread,