This is how capitalism works:

Question: Is it profitable?

Answer: If yes, do it. If no, don't do it.

Ethics don't come into the equasion.

Yahoo! seems! more! interested! in! covering! its! back!

So much can be said about Google too ... I wonder why they do it, they could shield themselves by saying "we're not a Chinese company"

oh wait, gotta say that in Engrish: we not Chinese company ;)

"...has joined a US court action against the internet firm."

The substance of this court action would be that Yahoo have an obligation to ignore any legal processes that it disagrees with? Is it just me or is that a tad futile?