This is quite similar to one that I wrote. Like you, I used regex instead of parsing XML. The only additional things my version does are:
1. manip the time so as to show the interval since the previous message; and
2. save everything to a log file.

The one bit of recommendation I'd make is that you don't need to re-instantiate the UserAgent object each time through the loop. One will do for the lifetime of the process. In fact, the same is true for the Request object as well.

jdporter
...porque es dificil estar guapo y blanco.