As I understood of my readings, the internet offer the service to easily buy and sale stock options. This is done from your internet workstation. It happens without having to deal with papers or real money. In the past, accordingly to a good or bad news, stock prices can increase or decrease. People tend to react instinctively on this.
Internet allows more people to have their instinctive reaction at the same time.
This creates fluctuations which are out of proportions. Prices are now strongly influenced by instincts. This way of managing money is of no economical interest. It is just gambling. Stock options becomes overpriced or going much lower than their real value.