Thanks for the comments you guys. Im not very good at this domains things so it's good to know other more expert users opinion.
Thinking US EFM Eight-to-Fourteen Modulation, an encoding technique Electronic Fetal Monitoring, see Cardiotocograph, a measurement of the fetal heart rate Electrostatic force microscopy, a type of microscopy Enterprise Feedback Management, a term used in corporate surrveys Ethernet in the First Mile, a networking technology Enlightenment File Manager, a file manager for Unix variants
You made me look for info on this and found some useful information at: http://www.answers.com/efm&r=67
Radio Station List FM Equipments maybe something like that. I was thinking about selling it but i believe is better to develop something first.
Yes, develop it and then sell it off, the value of the domain will also rise and it may be teasier to sell.