Nothing much too tell here. Do a search using Google. You know google.com? It may be web search or image search. Great!!
Now, Paste your Search Result URL to your facebook chat. You know URL? (Refer the picture below)
Now, you may get this error: This message contains blocked content that has previously been flagged as abusive or spammy. Let us know if you think this is an error.
Try. searching for facebook and post that URL to your friends in Facebook. Still, Facebook thinks searching about facebook on google is spam