How to clear a domain's Past Spamming history?

I am sort of at a loss and hoping there is a chance someone with enough knowledge on the subject may be here.
 
I purchased a domain name-- spent a lot of hours setting up my site and then began creating a facebook community using a Fanpage. Unfortunately many of the followers are getting messages from FB saying:
 
"The link you are trying to visit has been classified as potentially abusive by a Facebook partner." and then goes on to say for more information visit WebRoot. (which is why I am here)
 
I have since learned that my domain was previously owned by a common Spammer (Joe Wein) and had been black listed. I have done what I could at WOT to clear our record and have significantly improved our score. (http://www.mywot.com/en/scorecard/theyarnbox.com)
 
 
Any suggestions or ideas on how to clear our domain's name so that Facebook users are not being warned and scared away before getting to our site? I am only assuming that because FB refrenced WebRoot- that this would be the best place to begin damage control.
 
Thanks in advance for any encouragement or help