[quote name='IeptBarakat']
http://store.steampowered.com/freeportal/
Mac and Pc.
All you need is a steam account.[/QUOTE]
Sounded good until the last line.
[quote name='PhantomBlob']Thanks for posting, unfortunately I don't have steam so i'll have to give this a miss

[/QUOTE]
Yup, agreed. I had the misfourtune of using that disgusting program once and a free game isn't good enough to try again.
[quote name='IeptBarakat']It's a free digital distribution program.[/QUOTE]
No, it's a virus. Makes you update and break your games, doesn't let you play offline, and DL's or runs in the background without your permission. If it's not a virus it's clearly malware at the very least.
[quote name='louiedog']There's apparently very strong
evidence now that Steam is also coming to Linux. There's really no reason not to take advantage of this unless you already own Portal.[/QUOTE]
I'm glad to see more things supporting Linux, Windows needs to go. I have wanted to try Portal, but as I said above it's simply not worth the trouble. Let me know when the game releases on its own, without Steam.