Just for future reference and additional information for users with a similar problem. I contacted whos.amung.us and got this reply:
Simpli.fi is not malware, it is a data categorization service used via one of our partners that we will be using to provide more insight into our users audiences via new stats we are going to provide.
You can of course prevent any third party services from being used via our services by adding the following javascript before the widget code:
<script type="text/javascript> var _wau_opt = {'fbase': 1}; </script>
This will limit some aspects of our stats pages (what is being copied) however everything else will run as expected still.Hope this helps.
So simpli.fi itself is safe, although it gathers some data.
Finally simpli.fi is present in a number of malware infected sites that add ads, I assume those harmful scripts only use simpli.fi to make their ads better target the audience.
Now it is for yourself to decide whether or not you want to get rid of the simpli.fi script.