Dougherty & Co from Sell to Neutral;
Piper Jaffray from Neutral to Overweight; and
Albert Fried & Company from Market Perform to Overweight. Piper Jaffray from Neutral to Underweight, slashing its price target from $7 to $4;
Northland Securities from Outperform to Market Perform, halving its price target to $6;
Craig-Hallum from Buy to Hold, lowering its price target from $15 to $8;
BofA/Merrill Lynch from Buy to Underperform;
DA Davidson from Buy to Underperform; and
Raymond James from Market Perform to Underperform.