Google+ is fairly unusual and it just got a bit more unusual today. If you search Google, you might see Google suggesting that you thank your friends for +1ing the search result in Google+.

For example, I searched for [google] on Google and Google said I should the following people for +1ing the page on Google+. Here, Robert Scoble and Danny Sullivan +1ed Google.com and Google suggested I should thank them.

Then the Google+ share box will come on, specifically sending a message to Danny and Robert (limited share) thanking them for +1ing it on Google+.

This is what the share looks like in my Google+ Stream:

This was first spotted by Bas on State of Search and @charliesaidthat and Finn on Search Engine Land.

Forum discussion at Twitter & Google+.

Update: Google sent us the following statement: