Greasy Fork is available in English.
Adds an icon next to a comment in a blog post, if they're the blogger
What this script actually does:
* Highlights a blogger's comment by adding 'Blogger' next to their comments 
Installation Instructions:
1a. Firefox users: Download Greasemonkey
1b. Chrome users: Download Tampermonkey
2. Click the green install button on the left-hand side of the screen.
Follow the on-screen prompt, and click 'Install' / 'Ok' on the pop-up window then you're good to go.
Known Issues:
* None; if you see any, let me know
P.S If you use a mirror rather than the normal kat.cr site, you'll need to edit the script; change the 'match' / 'exclude' statements to the domain you're using (you can add multiple if you like).
