Drip feed backlinks service - In progress

Hello.

Me and few my mates are looking to build dripable backlinking service website. The goal is of course to make backlinking as much of "Set and Forget" as possible, but as we know, there is plenty of this kind of services, so we really care about quality of our product. And we would like to create a product on direct feedback from you.

Our team consists of 1) experienced programmer, 2)white hat seo-er, 3)WH SEO + AdWords advertiser.

But we need a little help in optimal backlinking strategy, so we can offer the best possible service! and of course PANDA secure

So first question:

In your opinion, what would you say it is the optimal way of creating daily backlinks(social bookmarking, article directories, web 2.0, blog comments, forum profiles, web directories, wiki links, high PR contextual blog posts on private networs etc...) ?

Thank you in advance!

Diversity is the best way. Some high authority Web 2.0s with unique content, social bookmarks on high PR websites, Few high PR blog comments on related blogs along with some articles and guest posts. Dripping feed these kind of diversified backlinks would do wonders. Of course along with diversifying the anchor texts.