Maybe some new Mac users might be helped by this:

Silverlight is what's called a Fork In The Road application. MS or one of their developers FIRST tries to sell a new, "enhanced web experience" to owners of major websites (like ABC, NFL, etc.)

THEN they start spreading the word that we all (including Mac users) need a plugin (Silverlight in this case) to enjoy these new benefits.

As pointed out already by others: Mac users are presented with a "fork in the road" decision" --

1. install the new software and hope that (a) the Mac version works as well as the Windows verson or works at all and (b) that MS will continue supporting the Mac version.

2. Ignore the MS app, do not spend time helping MS establish further dominance, do not petition MS for improvements (or for simple usability).

Given the actual history for this, (ref. MS Internet Explorer), one can see that if the situation becomes serious enough, Mac user complaints will reach Apple (or one of its developers) and a suitable replacement will be created. (Safari browser was created to "replace" Internet Explorer.)

Always remember: Apple has never completely failed to supply what its customers expect and demand. They would be out of business if they did. There's the Mac Way and the Microsoft way - you, luckily, get to choose.

So - no problems, Mates.