I can think of a few good uses of this…
Ever want to text someone anonymously? Hit up AnonTxt and just enter in an alias, a subject, and the message itself, and it’ll be quickly sped to the cellphone number of your choosing.
Of course, the message appends "anontxt" to the sender’s name, so the recipient knows where it’s from. So if you really want to spoof someone’s phone—say to make your co-worker think your boss is flirting with her—you’ll have to look elsewhere. And you can contact anontxt to block your number if someone is pranking you repeatedly. – Jason Chen
Product Page [Anontxt – Thanks Natas]