Who is behind it?

Fact-checkers have a habit worth borrowing: when they meet an unfamiliar source, they leave the page and look it up elsewhere before reading closely. This is called reading laterally.

A site can look professional and still be run by a group with something to sell. A quick search for the organisation's name — what do others say about it? — often tells you more in a minute than ten minutes on its own "About" page.

This is not about distrusting everything. It is about knowing who is speaking, so you can weigh what they say.