Had it done to me with this number. Had the same text..hi add me to yahoo. Weird that we google it..

sent me a text saying hi :) then said add them on skype gracechick7. wouldn't respond when asked to identify themselves. said they have no signal.

Received an unsolicited text from this number yesterday that said "hey (my name)".

They texted me today asking to be added to yahoo instant mess. Creepily, they knew my name.