Silo Architecture across multidomains

[Catalyste]

I am doing a test and would like to ask you're opinion about it in a SEO stand point :

I would like to structure a website that has 3 menu links to 3 keyword rich domains names that would be structure in a Silo architecture each one related to it's own topic and not duplicating the content.

Like a Cross-Domain siloing approach.

Do you think it would work ? How should I build this in order to ultimately build ranking for the main site ? Do you know if I could get this approach working in a global way : Each Second level domain working for itself and propelling the main domain ?

Any article, advises, Graphic, documentation, comment is welcomed !

[EGOL]

I had a competitor that used to make sites like this.  The top navigation would have links to other keyword-rich domains. All of these domains would have identical design so if a  visitor was not paying close attention to the URL he would think that he was still on the same site.

This guy had several of these little site clusters.

They all disappeared from Google.