This is nothing complicated, just a 10 minute project.
When you search reddit on google & click on the reddit's link. The actual website (URL to be precise) that is opened is:
And this way, Google knows that you opened that link. One downside of this is that Google knows what site you opened from the links & the other is that to go to reddit.com, you effectively open two URLs so the whole process gets slower.
Install these extensions & you can avoid all this & you will go directly to the website.
Firefox extension (not mine): https://addons.mozilla.org/en-US/firefox/addon/google-search-link-fix/
As chrome equivalent was not there, I made one.
Chrome Extension (mine): https://chrome.google.com/webstore/detail/cponecejlghamlmknchjbdimphahdpfo
The code is available on github at https://github.com/shadyabhi/GSanitizer