They tested web applications ( chat , newsgroups , and so on ) and web shopping , asking subjects to specify which features were most important when shopping on the web .
他们测试网络软件(聊天、新闻组等等)和网络购物,指定什么是网络购物最重要的。
But he notes that similar worries arose with previous internet technologies , such as newsgroups , the web and file-sharing , all of which involved big increases in the amount of network traffic .