I was visiting a Facebook page for a business and clicked a link on it to see some photos. Immediately after I did this, I got a Facebook message from the business saying they had sent me an attachment. I deleted the message, but was this an automated thing or will they have a record of sending me that message and knowing I was visiting their page? I have not liked, followed, or connected myself in any way to this business. I also didn't respond to the message. I can't find anything about this on Facebook but it's kind of squicked me out.