I usually bought on the net and I think that buying on the net is more frequent now than in the last five years. More and more people buy by this way and I think that is actually safer buying online than buying over the phone or in a shop. Although you must take care of the safety and you must buy only on secure sites. I have bought on the net a laptop computer two years ago, a dress to go to a wedding four months ago, two flights to Santiago de Compostela four months a go and two tickets for a concert last month.
I like buying over the Net because you save time and sometimes you can save up a bit of money. For example, in some sites you can find low-priced flights.
I know some shopping sites. One is t eBay, it is a good shopping site where people sale second-hand products by auction. The shopping sites that I prefer to buy clothes in the sites BUYBIP or VIPVENTA. And for buying tickets to a concert or a play I prefer the site ATRAPALO.