Groupon (NASDAQ:GRPN) has released its fiscal Q4 and 2012 results, and the daily-deals leader saw its losses increase. For the quarter, the company's revenue grew by nearly 30% on a year-over-year basis to $638 million. Net loss attributable to stockholders was $81 million ($0.12 per diluted share), which was deeper than the $65 million ($0.12) loss of Q4 2011.

For the full year, the top line totaled $2.3 billion and the ompany's net loss was $67 million ($0.10 per diluted share), against 2011's sales of $1.6 billion and net loss of $373 million ($1.03).

Groupon also provided selected guidance for future periods.The company anticipates that Q1 2013 revenue will be $560 million-$610 million, and the operating result will be between a loss of $10 million and a profit of the same number. For the full year, the company only said operating income should increase on a year-over-year basis.