As uncle Catchlights said, I started a WTB thread for 60D, how I know got some guy come along offer me this great deal (direct phone contact)
There is no requirement to login to CS to view threads if I am not wrong. Hence there could be no trace of who viewed my WTB thread.
In any case the police have the entire WhatsApp conversation (tip: you can select " email conversation" under "more" in your Whatsapp Chat conversations, can include attached media as well)
So the police even have the exact GPS fix of where we met (because I couldn't find the seller prior to our meeting and transacting, so send him GPS map fix).