Cleaning Laminate Floors  

I use a dry microfiber cloth mop and I sweep with it often, every other day. If you don't have a built in vac I would highly recommend getting one because it will never scratch your floors since there are no wheels and no casters. I wash my floors weekly and use a little vinegar with water with my microfiber cloth little vinegar with water with my microfiber cloth and they are always shiny and beautiful.

I found an artice which might answer some of your questioins.
Cleaning laminate flooring is that it really only needs minimal care. It is a good idea to sweep your laminate regularly. By sweeping your floor you will be removing dirt and debris that could wear down the finish on your laminate floor or that could potential discolor your laminate floor.
Take a look at this article
http://ezinearticles.com/...