17. A system as recited in claim 15 , wherein the phrase-filtering module filters phrases based on a perceived interestingness of each of the multiple phrases.
15. A system comprising: one or more processors; memory; a phrase-generation module, stored in the memory and executable on the one or more processors to generate multiple phrases for association with one or more aspects of user accounts associated with corresponding users, the one or more aspects of the user accounts for executing a payment transaction; a phrase-filtering module, stored in the memory and executable on the one or more processors to filter out one or more of the generated phrases based at least in part on a commonality of one or more words of a phrase; and a phrase-association module, stored in the memory and executable on the one or more processors to associate one phrase that has not been filtered out with an aspect of a user account for executing a payment transaction.