And we know Google tracks them.
Google told us this in 2014 and Search Engine Land reported on tests that confirmed it in 2015.
It's been difficult to discover them in the first place.
Most of our favorite SEO and backlink tools aren't able to see them at all.
So, let's start with the basics.
To answer this question, we first need to answer: What is a backlink?
A backlink is a hyperlink to another web page. In the SEO world, we call them "backlinks" because they link back to our sites. But make no mistake: a backlink is a hyperlink.
- Drop-down menus
- Dynamically inserted content
All of these are essential features of the web. Redirects commonly occur after someone submits a form and you send them to a thank you page—this is good functionality and that redirect constitutes a backlink to your thank you page.
Because our tools are blind, we SEOs and webmasters are also blind.
Like every other backlink. Here's Google's confirmation:
This makes sense. Changing the page after Googlebot arrives and expecting Googlebot to pick up on those changes is silly.
If you're reading the SEOptimer blog, you probably care about backlinks.
So, there's that.
I'd bet you're definitely aware that your backlink profile is one of Google's top 3 ranking factors.
We've covered the reasons to keep a clean backlink profile before, but to recap:
Dmitry, the founder of Ahrefs, said this in an interview with Search Engine Land:
To execute JS for every page at our scale [would] require 10,000-15,000 servers, and we believe our customers are not ready to pay for that yet.
I wouldn't ignore them.