On-line advertisement method using advertisement website

An on-line advertisement method performed by a user terminal and and an operator server, the method comprising:

• when a first bulletin board is selected by the user terminal, transmitting, by the operation server, advertisements related to a first area among the advertisements that pay user points;
• displaying, by the user terminal, advertisements on the first bulletin board, the respective advertisement of the advertisements is displayed on a screen of the user terminal for the respective designated time;
• selecting and watching, by the user terminal, at least one advertisement among the advertisements displayed on the first bulletin board, and obtaining, by the user terminal, one or more user points as a reward of selecting and watching the at least one advertisement;
• purchasing, by the user terminal, a position on the first bulletin board for posting a free advertisement using the obtained user points;
• receiving, by the user terminal, an input of at least one keyword from a user;
• searching, by the operation server, for an advertisement to which the same hashtag as the keyword is added among the registered advertisements;
• and
• displaying, by the user terminal, the searched advertisement.