I have numerous different lists on a website that point to reviews (on the same site). Once someone clicks on the review link, I want to know where the click was made from.

I could easily get the referrer information on the review page, but that information is only part of the info I want to save.

I want to know exactly which list the click was made from and which spot (e.g. was it on first position, or fifth or…) in this list.

So I’m thinking of adding hashtags at the end of the links, e.g., link to review would not be /review/myproduct, but to /review/myproduct#a1-b2 (and the # part would always vary depending on where the review is positioned)

Basically, I would be using the hashtags not to direct the user to specific parts of the page, but to send info to myself to save in the database.

Now the question is, if I were to do that, could it theoretically hurt SEO or not? In all honesty, I don’t really think so, buuut thought I’d see if there are any different thoughts about it?