Is there any retargeting companies that Modern Retail works with?
We've worked with Retargeter before:
We've also worked with about a dozen one-off companies that do retargeting. Most of that retageting has been for specific shopping sections of their site, like specific brands or departments. Of course you can also do retargeting right in Google AdWords.
Please let us know if you're interested in getting involved with a retargetting campaign.