I'm not sure if you're joking but I think AFAICR means As Far As I Can Recall and not an username. 
I also remember this script. AFAIK it was a chrome extension (which is open source) and I remember taking a look at the code to confirm it was legit. I can't find it right now but I'll make sure to take a look later.
No, it's not a chrome extension it's a firefox extension for mobile or maybe you are talking about the old one from here https://bitcointalk.org/index.php?topic=327238.0I also remember this script. AFAIK it was a chrome extension (which is open source) and I remember taking a look at the code to confirm it was legit. I can't find it right now but I'll make sure to take a look later.
Ow sorry, I thought it was a forum name
my mistake.