The computer geek in me does not like the lack of Linux support. Yahoo gets some positive nods for at least supporting (mostly) OS X. Larry Page said in his CES keynote speech today that a lot of people run Windows. True enough. But, Linux will not catch on with the general public if cool and free new toys like Google Pack don't run on Linux. Oh well.
That said, both Google Pack and Yahoo!'s Go Connect system look cool indeed and will make using computers more fun for non-geeks.