The way I use this is to use the footprints from the GSA folder (each one has a file) and turn scrapebox on to make massive lists of targets for each platform 2,500 is the minimum I have for a couple of obscure guestbooks up to half a million or more for certain blog platforms. I add all these sites into GSA. I use proxies as well (private ones) but I don't think they get used much as I supply all the targets.
Also MASSIVE deep spun comments that are keyword optimized. (maybe 3000 words with a few billion decent combinations)
Run on a VPS with 50 or more threads and a captcha service plugged in.
I'm setting to post to PR2 or higher only (so 90% of viable targets are ignored) and getting between 30 and 80 links per hour at a cost of maybe $5 a day in captchas.
Set up right this is a 1st tier linking tool with a decent amount of power. I wouldn't use it for articles etc - the GUI is a little too fiddly for me to bother with that - and I have better tools, but it is an excellent tool and between blogs, forums, image contents and guestbooks you have over 50 different platforms. SO alongside Scrapebox and Ultimate Demon you have a beast set of linking tools where just about every platform you can think of can be hit while you scrape massive lists of more targets. MASSIVE power.
The only downside for me is the amount of time I spent coding Zennoposter to post to half of these platforms, and this does it so much faster and with so much more stability.