I'm told that two of the original CityBeat columnists have given up their gigs in response to last week's dump of editor Steve Appleford. Natalie Nichols writes the pop-culture column Subbacultcha. "It was fun while it lasted," Nichols blogged last week. Dennis Romero does Groundswell, on dance music, and the weekly Dancebeat roundup of dance-club highlights. CityBeat's new editor as of Monday is Steve Lowery and the new arts editor is Rebecca Schoenkopf.