8. The method of claim 1 , further comprising, prior to selecting the set of target messages, receiving from the user a user interaction with a first message; wherein selecting the set of target messages comprises selecting the set of target messages based at least in part on the one or more keywords and the user interaction with the first message.
8. The method of claim 1 , further comprising, prior to selecting the set of target messages, receiving from the user a user interaction with a first message; wherein selecting the set of target messages comprises selecting the set of target messages based at least in part on the one or more keywords and the user interaction with the first message. 9. The method of claim 8 , wherein the user interaction comprises at least one of: replying to the first message; voting on the first message; tracking the first message; and clicking on a user-handle for the author of the first message.