With city eyes on them, House of Blues band warns concertgoers tonight to keep arms, elbows to themselves

Karlsie tweets from the Lansdowne Street hall that while they have yet to install the city-mandated illuminated "No moshing" signs,

Ramshackle Army announced from stage "just dancing, no moshing."

UPDATE: Kalsie tweets next up is DYS:

DYS just said "where I come fm that ain't right & I come from here " and told the crowd to "just be safe" when they slam dance.

Matty Vaitiskis tweets to Mayor Menino:

Quick question, I know we can't "mosh", but is pogoing ok?"