Research Writing Process (Book)

A specific subject (blogging) + a particular stand, feeling, or feature (restaurant owners increase business by adding blogs to website = an effective thesis statement (Adding blogs to restaurant websites shows a dramatic increase in restaurant business)

A thesis statement is a single sentence (the last sentence in your first paragraph) that presents your stand to the reader. The rest of the paper, the body of the essay, gathers and organizes evidence that will persuade the reader of the logic of your interpretation.