Millions of people around the world get paid to perform small online tasks for private companies. By most estimates, these 'crowd workers' get paid anywhere from $3 to $9 per hour to gather information, transcribe text, or evaluate websites. Some work for as many as 50 companies in one day, with flexible hours and little commitment.
Usually, there are no contracts, no unions, and no opportunites for training or advancement. Sometimes, there's no pay at all.