Do you alias your emails when you can to help detect spam location? Most email providers have it, but I have only recently discovered it.
Like for example, with john.doe@gmail.com, you can make it john.doe+ozbargain@gmail.com. This goes into your inbox as per normal, and you can see that if you're getting unsolicited emails with the recipient as john.doe+ozbargain@gmail.com, you know who sold you out.
I started to look into it but I realise its going to be very annoying to remember the extension after your email as a per site thing, and also some sites don't allow the plus sign.
Any veterans with this process like to comment?
It wouldn't be hard for them to strip out the +ozbaragin bit or the dots to get the base email address. Whats added is common knowledge. Then you won't know who sold it.