"When bitcoin protocol raised the value of bitcoin through constant limited supply, with value appreciation came a price - the appreciation was so immense that they had to periodically release the excess, lest they be overwhelmed by it. Such a release became known to the bitcoin community as a blowout or emission. On June 2011, the very first emission occurred. Unprepared investors and traders were instantly obliterated. This also caused the bitcoin network to expand by 5%"
http://stalker.wikia.com/wiki/Emission