From his Twitter:
Jeff Madsen @JeffMadsenobv
peeps! message me for interest in private poker lessons; have been doing it for couple months now, client base growing. guaranteed results!!
Jeff Madsen @JeffMadsenobv
one of my poker students just made a final table in Tahoe when I met her she was a beginner now she's already getting results! could be u!
Watch out, Maven?
https://twitter.com/JeffMadsenobv