[thegeomaster]

Just to point out that hovering over the link shows URL-encoded codepoints, i.e. %u200B (in Firefox, for me, at least). I do think it's a better solution than the existing approach with GET parameters which does look clumsy.

[detaro]

Interesting. Chrome on Windows doesn't.

[mschuster91]

Here neither. But even then, for very long URLs (can easily happen with that SEO crap), just hide your tracking byte so that when Chrome/FF truncates the URL for display, the bytes will be inside the hidden area.

[FoeNyx]

the %u200B is not being displayed while hovering the link by Firefox 35.0.1 / Linux (but it is displayed with beta 36 on the same computer)

[kevinchen]

Safari appears to do the same. Version 8.0.3 (10600.3.18)