Google before anything
I have been receiving large number of sms.ac invitations in the past months. I have never responded to those invitations, but they are very annoying and it seems like my friends are spamming me with those invitations.
Yesterday, it drove me nuts. The invitations are repeating every few days, warning me that I am not responding to requests and sms.ac keeps on resending the requests!
Anyways, a simple google search shows that sms …