When you give your email address to a website, you hope that they don't sell or trade your address to a bunch of spammers. Well if they do, here is a simple way to see what sites are responsible for what particular piece of email. This requires you have a Gmail account.
If your Gmail login name was username@gmail.com and you went to samplesite.com to fill out a registration form, instead of just entering username@gmail.com as your email, enter it as username+samplesitecom@gmail.com instead. When Gmail sees a "+" in an email address, it uses all the characters to the left of the plus sign to know who to send it to. In this example it would still send it to username@gmail.com.
Now whats cool is if you search Gmail for username+samplesitecom, you will see all massages that were sent to that email address.
To see who is responsible for sending a specific message click the Show Details link and you will see the complete address.
Neat!
Fuente: http://www.hedir.com/introduction/about17942.htmlEn pocas palabras por ejemplo si queres ver si svcommunity es el culpable que tellegue el spam haces esto cuando te registras pones
miusuario+svcommunity@gmail.com y luego en las propiedades del correo podes ver la direccion real a la que el correo que te llego, si la direccion es con el +svcommunity fue de aqui que te salio el spam jajaja