I'll try to stay on topic in the context of travel:
* Fare sale! Only xxx*, where *=excluding taxes, which could be up to $100, also each way based on a roundtrip purchase -- so if you HAVE to make a roundtirp purchase, double the d*** figure!
* NW Cybersavers! Book yours today! (No mileage can be accrued.)
* Form letters from airlines responding to your complaints, which may not even address the issue.
* SPAM mail telling me the best travel deal of my life. Gotta act now or else this deal will be gone!
* Underpaid security check workers in the U.S.