can i publish my reviews at ciao in other review sites?how?

I think Ciao don't have any clause in the terms that you are not allowed to publish your reviews to other sites (unless I miss something) and as long you have placed a note that your review could be found in Ciao or other sites and you are the same author making such review. You have to check also with the sites that you have mentioned if they allow you to publish reviews you have made in other competing sites.