One grim, if remote, possibility is that this could have something to do with the 2008 threat to the domain name system, as reported in my "ID Theft" blog in August 2008; that had led to emergency international security meetings at Microsoft in July 2008. (Brian Krebs had a typical story about this problem at The Washington Post in August 2008 here.)
Update: Now it is looking like it might have been the result of a misspelled domain name "faceook.com" taking one to a survey site. In any case, it's working OK in Internet Explorer today.
Update: March 2: I got another text from "guessology" at 7:30 AM EST this morning. I hope this isn't the start of something. No, I don't need more ring tones.