25. A method implemented at least in part by a computing device, the method comprising: determining that a statistically-improbable phrase is associated with information known about a user or a user's account; determining other phrases that are associated with the statistically-improbable phrase; and associating a phrase of the determined phrases with an aspect of an account related to the user.
25. A method implemented at least in part by a computing device, the method comprising: determining that a statistically-improbable phrase is associated with information known about a user or a user's account; determining other phrases that are associated with the statistically-improbable phrase; and associating a phrase of the determined phrases with an aspect of an account related to the user. 27. A method as recited in claim 25 , wherein the statistically improbable phrase is determined to be associated with information known about the user or the user's account based at least in part on prior purchases made by the user.