I was contacted by a technical recruiter through Angellist. She reached out to me because she thought my background and experience were a fit for a role she was filling. She explained to me that she needed to clarify some parts of my resume and background before speaking to the hiring manager to schedule a in-person interview. The questions she asked were very basic. She told me that she'd speak with the hiring manager and get back to me within a week. She didn't so I gave up.