OMG it totally does!!!!!!
var server2="http://www.somesiteimloggedinto.com";
var test_data=function(){
GM_xmlhttpRequest({
method: "GET",
url: server2,
onload: function(response) {
if(response.status == 200){
alert(response.responseText);
}
},
onerror: function(response) {
console.log("Connection to "+server2+" failed.");
}
});
};
test_data();