http://kotaku.com/5488375/left-4-dead-2-team-fortress-2-portal-and-steam-coming-to-mac-in-aprilAlthough this probably won't affect many of you, I'm very, very pleased about this. Finally I can get a taste of Left 4 Dead without having to steal people's laptops.
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Well done, I'm sure we're all so thrilled for you.
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Why steam do this? Mac has like limited hardware for gaming.

For Mac people (Get non mac computers the hardware performance is better)
I am a Mathematician Computer Scientist Logic user
Because the graphics cards that come in newer Macs are able to handle games like Portal, Left 4 Dead 2, and others.
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