Many times I find a question which does not belong to SO, and I want to flag it as off topic then I get a list of websites as shown in the screenshot bellow:
My question is how this list of websites created ? and what can I do if I wanted to mention a website which is not listed there ?
For the instant I have a question which I wanted to flag it as bellowing to https://softwareengineering.stackexchange.com/ but it is not listed !