Cierra resigns from middays at CHR/Rhythmic WMBX/West Palm Beach and will be relocating with her family to Philadelphia.

In New York, former longtime AC WLTW air talent Al Bernstein joins Classic Hits WCBS-FM for part-time duties.

Sean Demery exits as PD/Brand Manager/afternoon drive host of Modern Rock KXRK (X96)/Salt Lake City. As reported yesterday, long-time X96 PD Todd Nuke'em is back with the station as afternoon drive host. Simmons Media-SLC VP of Programming & Operations Alan Hague is now overseeing the programming for X96, as well as sister Country KEGA.

Changes at Rock KQRA/Springfield, MO: PD Kristen Bergman adds OM duties for the station, as well as sister AC KOSP. Shadow is promoted from MD to APD, while night host Brock Havens adds MD duties.

Rock WXEG/Dayton announces the lineup for its 2012 X-Fest, taking place Sunday, September 16 at Dayton's Montgomery County Fairgrounds. Seether, Sick Puppies, 10 Years, Dropkick Murphys, Filter, Pop Evil, Falling In Reverse, Kyng, Young Guns and Dangerkids make up the lineup for the annual event.

Modern Rock KITS (Live 105)/San Francisco will hold its fourth annual Halloween electronic music event, Spookfest 2012, on Friday, October 26 at the Oakland Oracle Arena. Producer and EDM scene star Calvin Harris will headline the event.

Ron Chavis exits nights at Urban AC KRNB/Dallas.

With the completed sale from the SLC Divestiture Trust to Capital Broadcasting, KJQN/Salt Lake City sheds its Jack-FM format in favor of World Class Talk, which will be simulcast from sister station KLO-AM.

Tyler Broadcasting acquires four Oklahoma City stations from Renda Broadcasting, while selling off two of its own in the market. Tyler is purchasing AC KMGL, Classic Rock KRXO, Classic Hits KOMA and Talk KOKC, and sells off Country KKNG and Talk KTLR-AM.

Yahoo! has named former Google VP Marissa Mayer as the Web giant's new CEO. Mayer also announced that she is pregnant. She told Fortune that she had informed Yahoo!'s board of directors of her news in June, but the board had no concerns. Mayer becomes Yahoo!'s fifth CEO in the past five years.