I've recently put some query string parameters into links leading to a 'request a quote' form which auto-fill the 'product' field with the name of the product that is on the referring product page.
E.g.
Red Bicycle product page >>> Link to RFQ form contains '?productname=Red-Bicycle' >>>> form's product field's default value becomes 'Red-Bicycle'
I know url parameters can lead to keyword cannibalisation and duplicate content, we use sub-domains for our language changer. BUT for something like this, am I potentially damaging our SEO?
Appreciate I've not explained this very well. We're using Kentico by the way, so K# macros are a possibility (I use a simple one to fill the form's Default Field).