I've got tons of emails in my inbox asking me to join this site called Gazzag. There are tons more that I've deleted. And what's worse, the number of invites I've been getting per day is going up.
Gazzag seems to have taken cue from gmail's Viral Marketing [http://en.wikipedia.org/wiki/Viral_marketing] to popularise its social-networking service. What they've done differently from google is that they've automated the invitation process - that is a trifle irritating. In fact, some new users don't even realise that they've exposed their addressbook to this website which sends out invites to all their contacts.
Thankfully, gmail filters are here to my rescue. Gazzag, your invitation emails are being summarily trashed.