Weblogs or blogs are online posts usually written by individuals or small groups on topics of their interest. These can gain a large following and can outline the key ideas behind a campaign and enable readers to give feedback on the views presented. They can also take the form of videos where people discuss issues of interest to others, and these videos can be included in the blog. They can also have links to fund-raising sites and other forms of revenue, such as advertising which can help raise funds.