BETHESDA, Md., July 25, 2008 (PRIME NEWSWIRE) -- CoStar Group, Inc. (Nasdaq:CSGP), the number one provider of information/marketing services to the commercial real estate industry, today announced the appointment of Michael J. Glosserman by the Board of Directors to serve on CoStar's Audit Committee. As previously announced, Glosserman was elected to the Board of Directors at CoStar Group's 2008 Annual Stockholders Meeting held on June 10. ...