Web 2.0 question.

Been looking into web 2.0's and have bought a few with decent stats and solid backlink profiles, but I am wondering a few things.

1. Are web 2.0's okay for an Adsense based website rather than affiliate website.
2. How wild can you go with web 2.0's, the current site that I am building has 20 posts each targeting a different keyword. So would doing a few web 2.0 posts per post look suspect.
3. Should I push a few web 2.0's to the home page also or purely go after the blog posts.
4. Finally if #2 looks suspect how does this sound:
   1. Sending 5-10 of the web 2.0's juice to a single web 2.0 and then using that singular web 2.0 to boost the post.

Sorry for all the questions, I am back doing SEO after a long hiatus and EVERYTHING has changed.

1. Yes it's fine. It's fine for any website.

2. Won't hurt. Just mix in other links for diversity.

3. Definitely send some to root domain. I would do that first and then slowly start linking to your articles.

4. Those would be tier 2 links. The web 2.0s pointing straight to your money site are tier 1. No harm in boosting all tier 1s with some tier 2s. I had some ok results using GSA for tier 2s. I say used to, because in dont really rely on boosted web 2.0s as much these days.