I just bought a 27" iMac. I've done a clean start on it, and just finished transferring my data and installing applications I wanted. There's only one that I haven't added yet - Steam. My MacBook Pro got a bit sluggish, and the only thing that was "new" on it was Steam. Because of that I was worried that it might be the culprit. Are there any real concerns I should have about installing Steam, or am I worrying for nothing? Are there any real issues that could present themselves by installing it?