I was matched up with a recruiter who was extremely helpful - emailing me interview tips and common questions, telling me what to highlight on my resume and important things to mention. She called me before both phone interviews I had to prep me. The first phone interview I had was more of a screening and was very routine; the second interview was much more elaborate and intense. My recruiter also followed up and called me to tell me that they'd gone with another candidate, which is a courtesy many companies don't extend.