The charge, you said the Sina microblogging promotion, at present the main is the fan pass, is the usual see the kind of microblogging users did not pay attention to microblogging microblogging, this microblogging is generally with the "recommended" a kind of label. According to the amount of exposure or interaction charges, exposure is 1,000 times 5 dollars, generally have to be out of a little higher to have the opportunity to show. Interaction each time from 50 cents, also need to be out of some high, such as out to a few dollars dozens of dollars dozens of dollars have. Fan pass is displayed to not pay attention to your microblogging users, you can set the user attributes (age, geography, interests, etc.) There is also the fan headlines, is a certain period of time to your microblogging in the form of headlines to show your fans, this audience is relatively small, usually a few dollars in the form of a few dollars.