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Looking for information as to the quality of marketers regarding their repuation.

Does anyone know anything about Barb Ling and Tony Shepherd? Are they good to follow or not?

Thank you.

Defo Tony shepherd. Good guy, good info. You'll either like his style or not. Either way he's very down to earth and ain't afraid to say what he thinks.

Barb Ling offers a lot of free and good information.

I can recommend both