Reid Hoffman, bringer of truth.

"Compared with traditional resumes, Linkedin resumes were less deceptive about the kinds of information that count most to employers, namely an applicant's prior work experience and responsibilities, but more deceptive about interests and hobbies."

In general I wonder if saying things in public tends to be more honest for things that can be verified (e.g., what we've done) and less honest about aspirational things (e.g., things we want other people to believe are interesting to us).