Blogs and microblogs allow individuals to share information online. Blogs typically feature text, images, and links displayed in reverse chronological order and allow comments, while microblogs restrict posts to short messages like tweets of up to 140 characters. Popular blogging platforms include WordPress and Blogger, while Twitter is the dominant microblogging service, with over 500 million members posting 400 million tweets daily. Both blogs and microblogs can be used as marketing tools to engage audiences and gain insights into brand perceptions.