thanks guys, yeah I understand all the points raised. My focus site is a standard website of mine. I have created one 6 site linkwheel using my main keyword pointing to my index.html page (my main page). I am building another linkwheel with different properties with the focus page being a subpage of my main site e.g. mysite.com/keyword2. All the 2nd wheels will point to this sub page.
All seems fine, it just popped into my head could you do another wheel, at a later date, focusing again on the index.html page using the same keyword but using different web 2.0 sites. It was just a thought.
Or maybe I just expand the initial wheel to contain more web 2.0 sites, and just go through each site, update the links, tweak some words etc, ping and see what happens. mmmmmm