If you go to Google Hong Kong, or the place Google China redirects you to, you are shown an interesting Google Logo. The Google logo is all in white. Here is a picture:

This white Google logo was also on Google Poland a few days ago.

The reason it is mysterious is that the alternative text on the image has no clue on what the white logo represents, nor does the logo hyperlink to anywhere, plus the image name reveals nothing interesting.

A Google Blogoscoped Forum thread speculated the white logo on Google Poland was a form of a memorial for certain victims. But if that is true, why is Google Hong Kong showing the special logo – I don’t think there is a public memorial today in Hong Kong. Some are speculating due to the earthquake in Qinghai, China but why not link to this or something to represent what this is about.

Hat tip to Michel for pointing these out to me.

Forum discussion at Google Blogoscoped Forum.

Update: Google sent me this statement on these white logos:

Google also confirmed that the first time they used the white or colorless logo was last week on Google Poland.

It is my understanding that Google uses this logo only when a government body declares a state of mourning.

Update: Baidu also has a colorless logo: