Insight Global Software Developer interview questions

I have been contacted by a half dozen "recruiters" from Insight Global, likely via CareerBuilder or LinkedIn. Typically I receive an email telling me about the "great opportunity" they're trying to fill, which I would "be a great fit for." Three of six times that I responded I didn't hear back from them. Twice I've had phone contact with recruiters who were blandly positive about placing me only to have them not follow through with promised job descriptions - but they were more than prompt about sending requests for my references and information about other companies I've interviewed with. Sorry, I'm not wasting the time of other people who I have actual relationships with so you can pitch your crummy "recruiting" services.