Ok I stand corrected, the economics of paying for forum spamming does not make sense and the software you mentioned (I don't want to name it here) does solve many captchas automatically (It is even rumored to solve Google's captchas)
But for other stuff that I mentioned in my previous comment, it does make sense for them economically and they do use it.
I'm not sure why you wouldn't want to provide names or links here. I'm sure if HN users want to spam we're resourceful enough to figure it out for ourselves and for those of us who don't care to spam it would be helpful to see what we're up against.
Yes I did mean that. I didn't mean to insult the intelligence of HNers though. Just thought it wouldn't be prudent to mention here!
If you're going to forum profile spam, you'll go broke paying for captchas.