Just as peer-to-peer businesses like eBay allow anyone to become a retailer, sharing sites let individuals act as an ad hoc ( 臨時的) taxi service, car-hire firm or boutique hotel (精品酒店) as and when it suits them.

In original business model, which involved selling ads and putting then At the side of the pages totally Who wants to took at ads when they're online connecting with their friends?

Removing ads from all social-networking sites.

Hi, I'm calling about the ad for the one bedroom apartment.

The ad specifications had not been given in detail.