That's correct. You can create an unlimited amount of blogs/social sites on the supported platforms.
Then with each blog/social, assign it to your own "network" Can be any name you want to give it.
So you would have 90 blogs/socials... combination, whatever.
Assign each one to a network and then projects can be run against that network or all accounts.
Personally I let the Web 2.0s/Social have a lot of warm up posts. No links. Take a manually created article and spin it myself using ChrimpRewriter. Then post out ..
And I go to each blog/social and update the photo, about me.. it's time consuming for sure.
If you were going to create hundreds of blogs, then no need to do that.
I wanted to legitimately create a single Web 2.0 firewall. And keep it's theme unrelated with posts about whatever so there's no really obvious footprint. Then leak in an article with a couple of links to my money sites along with authority. I'm just trying to pass link juice. It's worked in the past.