Ask HN: Contacted by Lincoln Square Advisors?

I graduated from one of the top schools about 5 years ago, and out of the blue someone emailed me at my alum address. He doesn't seem to know much about me other than that I am an alum.

I talked to him more and it seems they are working mostly with well funded startups and hedge funds in New York. I have sent him my resume and he helped schedule me for a couple phone interviews, without telling me in advance which companies he was going to send my resume to.

Anyone has experience with these recruiters? Will it hurt me in anyway by going through them instead of applying to those companies directly?