New Post: Query 2007 List form 2010 Environment

$(document).ready(function () {
           $().SPServices({
               webURL: "http://spsite/research/blog/",
               operation: "GetListItems",
               async: false,
               listName: "Posts",
               CAMLViewFields: "<ViewFields><FieldRef Name=\"Title\" /></ViewFields>",
               completefunc: function (xData, Status) {
                   $(xData.responseXML).SPFilterNode("z:row").each(function () {
                       var title = $(this).attr("ows_Title");
                       
                       $("#list").append("<li>" + title + "</li>");
                   });
               }
           });
       });

1. Access a list on the same sharepoint instance in another web... worked
2. Access a sp2010 list in another environment ....didn't work