I just won a $1000 Walmart gift card, too,  Didn't respond.  Sounds too good to be true - and you know what they say about those things...  I don't know what kind of scam it is, but it's bound to be a scam.

Received a text I had won a $1000 Walmart gift card.  Don't believe it after seeing these other posts from area code 619.  Hate these scams!