Many lawyers need to monitor web pages for changes in content. For example, my state court system maintains a web page listing all of the appellate matters in which I appear as counsel of record. It is based on my Bar number. Instead of checking that page every day and looking for changes in the docket listings for each case, I used a service called ChangeDetection.com to automatically notify me each day if there are changes to the docket listings on any of my cases.
In my state, Michigan, docket listings for my Court of Appeals or Supreme Court matters are updated overnight to reflect new filings, correspondence, and issued orders or opinions. At various times during the day, I receive emails notifying me of updates to one of my case pages. The email includes a link to that page and another link showing me the change that was detected. I usually go right to the changed case page and scroll to the bottom to see the new docket entries.