So if you log into Steam and search Portal, there it is showing for £14.99
But if you click the link, the games actual page just shows "Install" not "Purchase". I clicked it, its downloading
Dunno if this is a secret promo or a glitch.. or if I'll get a surprise bill (dont think they can do it after the fact) but anyway, yeah. Portal. Free. Yee-haw
Got told by someone who did it this morning and is now playing. They said they double checked their account and all seems fine
Apparently it's a promotion and it's free until the 20th.
Yup - learn with portals (http://www.learnwithportals.com/).