Do not do what Amy's Baking Company did to their bullies.

Okay, in all seriousness... this was just posted the other day (might have been yesterday?) and though humorous, can be applied to what you're going through: http://abovethelaw.com/2013/06/how-to-write-a-great-response...

Now, I am not a lawyer, but I believe you could potentially change your brand name to "Freelancer F___ M___" and plug some words that pair with .fm. Example: "Freelancer For Me" comes to mind.

Also, the spiteful side of me says to proxy the feed from freelancer.com to your platform, but that's just me.