If you want to talk to sandy alone, there is a PM function supported by the forum
![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
Anyhow you don't really need to link those scammers accounts, it does not matter if they all belong to the same person or not, they are all gift-card scammers who are tagged by at least one DT member, what you could do is create flags against those scammers and ask for support, I am sure more DT members are willing to support flags against scammers than just accounts that might be connected to one another.