Google does this so they have click tracking data. But they don't need to mangle URLs in Chrome because it supports the `ping` attribute on tags [0]. The ping attribute basically adds click tracking as a native browser feature so you don't need to do URL redirects. It also makes these analytics much easier for the site and mysterious to the user. Looks like most vendors besides Firefox support it. (They were pretty o…
For Firefox, there's a relatively popular extension called ClearURLs that sanitizes most URLs to remove tracking, including Google's and Amazon's.
Otherwise I love ClearURLs.