Web 2.0 network instead of private blog network, good strategy ?

I do both. The downside of the Web 2.0's is you have no control. They could disappear at anytime without warning. Keeping that in mind, I would put very few links in the articles. I usually only include links in one out of every 3 articles or so, other than links to authorities like Wikipedia, WebMD, or something like that.

For example, you have created 15 web 2.0 sites, you have posted links on each of them, for next link building you are using the same page then it is issue of footprint and Google would easily know that it is not natural link.

Don't be scared to start private network. I wasted money in the beginning buying worthless domains but I eventually learned along the way. I now have a reliable domain seller that I'm willing to share with you since I know you won't abuse the resource.

As for hosting, I just Google cheap hosting and search for $2/month deals with cpanels per domain. I also have 5 cclass shared 5 ips per cclass to separate my different niches. I populate them with unique content by curating related news and linking out to source.

I still use other methods but turn to my private network to make that last push. The faster you get started the better. Since I believe you will be building up slowly, start now. Even if its just 1 pr 3 just to go through the motions. Pm me if you want list.

For web2.0, I usually have 10 built at time with 1 spun article and I send blog network links to them along with some cheap comment spam.

I don't worry about attrition. I pick out the ones that stick past a month and try to build pr to those. Not sure if this is the right mindset but how I do it.

Not a unique strategy but something I've been doing. My motto is to depend on Links as little as possible. That means trying to have a site people wouldn't mind linking to as a resource or accept guest post from, making sure I attack the right keywords and focusing on the best Links.

Edit: when I said depend on links as little as possible I meant manufactured links. It's always great to have people link to you and in the beginning I was skeptical but people actually do link to my sites. Mike Anthony labeled one of my sites as mfa and it was hard to disagree. The articles on that site I showed him was the last time I used that writing company so mike didn't say anything I didn't recognize myself. Point is, you don't need the best site but if it looks like you care and at least trying, people have no problem giving a link.

Building out web 2.0 sites over time is certainly worth while. It's best to post content at first which does not have links and keep posting content for a while before you add your links.

The content on the web 2.0 should not be promotional If you want them to stick. I know a number of people who post news and celebrity related content to their web 2.0 sites and they have had many web 2.0's build up pr over time. If you use content which is fun and entertaining and include your links in a subtle manner they are much more likely to stick.

At the end of the day you have no control over these links and links you control or links other people give you voluntary will always stick better.

One thing to consider is that the concept of creating web 2.0 sites and then backlinking them (basically tiered links) is becoming heavily used. There is always a danger that if google see's many people using this technique it will become obvious to them. You should never be relient too much on one link type which is controlled by a third party.

Web 2.0 networks are awesome especially when you start building them out. For each money site I build a network of around 50-100 web 2.0's and then I have a network of around 5000 that back it up with links. Of course I don't use all of them in my tiering process but I have them at my disposable. Its insanely powerful. Throw in a few high PR links and you're pretty much unstoppable.

Good strategy. Just be sure to make them legit that gives real value to the readers.

and the beauty is web 2.0 sites are authority sites, very old domain, lots of activities on these sites so if you use them then you are really getting good benefit from SEO, at least it is better than 6 months or 1 year old blogs.