The Blast Beat Network, who handle the premium advertising for theprp.com, as well as Metal Injection, MetalSucks, Lambgoat, Decibel Magazine, MetalInsider.net and more, are running their annual winter unsigned band promopalooza. From now until the end of January, unsigned bands can get a discounted price for ads running across the network, which includes this very site and the numerous other sites listed above. You can find the details for that promotion over at Blastbeatnetwork.com.
