What are some effective marketing tips to market an open source ERP?

use skills that called body language and my voice tone to handle the situation and have to know the customer key or on other hand they called it the weekness point and don ever give the customer what i have till i know what he is searching for then i can give him my offer in interesting way let him want know more about what i have.

put a big "FREE" word in your marketing collateral problem solve.

choose some better key words and post the ad in a effective manner  .