It's Yorkshire but doesn't it perfectly illustrate how it's not always Americanisms or text speak or yoof slang which change language but can be regional stuff spoken locally for years now becoming widespread through social media.
I can't see anything wrong with either form and suspect I've probably used both at different times without ever giving the matter any conscious thought.
I have never heard what do you think to this, so it must surely be a very localized dialect form.
I was brought up to say either what do you think of this, or about this. In the west of Scotland you can think on something, too. Especially in the usage I was think on what you said, where thinking on conveys that considering theother person's opinion,.
Well I ve never lived anywhere near Yorkshire I mEast Anglia and that’s what I would say ‘what do you think of this’ sounds right I think ‘to’ sounds ok as well I might even say ‘what do you think about this’