For those who don't know how the ExtraFlags script works:
It is NOT a keylogger. However, it is one other thing: an IP logger.

Here's how this script works:
1) When you make a post, it sends a message to https://whatisthisimnotgoodwithcomputers.com
It sends your post number, board and flags to /int/post_flag_api2.php
This stores it in a big database.
2) When you look at a post, it sends a message to /int/get_flags_api2.php with board and post number.
It looks the post number up in the database, and checks if someone else added flags to it.
If there are flags, it shows them to you.

HOWEVER.
THIS MEANS THAT THE SERVER AT https://whatisthisimnotgoodwithcomputers.com KNOWS:
- YOUR IP
- ALL POSTS YOU SEE, ALL PAGES ON 4CHAN YOU VISIT WITH YOUR IP
- ALL POSTS YOU MAKE, WITH YOUR IP

IF YOU ARE NOT OK WITH HAVING A RANDOM KNOW ALL OF YOUR 4CHAN HABITS, UNINSTALL/DISABLE EXTRAFLAGS ASAP