Dont add this person and block from your phone service immediately.. they track your GPS on your phone from where you text back. Luckily they texted my Google Voice number and not my actual cell number so they cant get a position on where i am.. but block them immediately. If you texted back.. you are screwed. Alert your cell provider and bank because they can gain access to credit cards by you texting back. Yes its THAT serious. Good Luck! PS: If you added them to Yahoo.... This is one of those things in life you would regret doing.