New Post: Get Site Title

You don't need SPServices for that. You can do it with jQuery.  The site title should be at the top of each page with an tag ID of 'ctl00_PlaceHolderSiteName_onetidProjectPropertyTitle' so referencing that element's text property is simply...

var strSiteTitle = $("#ctl00_PlaceHolderSiteName_onetidProjectPropertyTitle").text();