Google has blacked out their logo to protest SOPA and PIPA. But Microsoft Bing and Yahoo have done nothing to protest loudly on their home pages.
Google's logo takes you to this landing page with some details on the regulations and a way to take action and fight against it. Like I said, Yahoo and Bing are pretending nothing is happening.
Here is the Google Logo:
The only other search engine doing anything, as far as I know, is DuckDuckGo:
Ask.com has an ad:
Wikipedia was the most vocal about this protest:
I should note, Yahoo owns Flickr and Flickr does allow people to darken their own images as a protest, but Flickr is not doing it automatically, which I guess they should not do.
Even Search Engine Land went a bit dark, not completely, to protest SOPA:
And we have our own theme, kind of like Search Engine Land:
So Bing and Yahoo, what is up with you?