This is a great way to obtain articles based on information from citations or a bibliography. Also, when you search for articles by title, you are able to see how many times a specific article has been cited. Researchers often like to see how many times an article has been cited since its publication, which helps indicate how influential the research has been. It can also help you find more current research on a given topic. Or maybe *you* have written an article, and you want to see who else is building upon your research.
Figuring out how often and who has cited an article in Google Scholar is simple. First, perform a search. If you are looking for a specific article, put the title of the article in quotes.
Under each article, there will be a link that says "Cited by..." This is the number of articles in Google Scholar that link to the one you just found. Click on that number and you will be taken to a list of those articles.