Link Building on PBNs vs Web2.0's - Is it Different?

I'm about to start on the road of my first 'manual' link building campaign...and I cant seem to figure out this nagging question in my head so please help if you can answer it?

The situation and plan is to rank the home and many inner pages of my money site, targeting 1x primary keyword per page.

What I know on PBN Sites...

I've learn't from the Gurus NOT to link to the same domain/home or inner page more than once or one time only, hence the need for a network - I believe the reason is to not stir up too much scrutiny from Google, appear natural etc (not to mention hiding/concealing all the details/footprints of the PBNs so Google thinks this is just another separate site naturally linking to mine)

And my questions on Web 2.0s...

When creating accounts on web 2.0's adding content and building contextual links...My questions are:

1- Do I also create separate fictitious ownership account details for each Web 2.0 site on the same platform i.e wordpress.com - and or - across many different platforms e.g. Weebly, Livejournal, Wordpress ?

2- Does the same PBN linking rule of just 1 link out to the same domain home or inner page apply to web 2.0s?

My question explained differently is - Do I need 10 separate/fictitious Wordpress.com accounts to create contextual back-links to the 1 money site/page - or - do I just get the 1 Wordpress.com account and create 10 posts on it pointing links to 10 separate pages on my money site???

Its doing my head in so i hope I explained this clearly - many thanks for your responses

Cheers
Rick