2. These are both rare things to say outside of language-learning circles, so not sure that "more commonly spoken" has a real meaning. . I'd also be more likely to say somethign like '"on" is used for websites' as it is not the website that is singular. "On" is used for pages on a website.

Thanks a lot

Hi Kai, I'm not sure I understand your sentence, but I would say number two. It might help for you to explain the context of your sentence.

You mean I am on a website. If so, then number 2.