Google Alerts are email updates of the latest relevant Google results (web, news, etc.) based on your choice of query or topic. Alerts are a passive source of valuable info, sort of like an online "wiretap." You can use them to get up-to-the-minute information and activity on the search terms of your choice. For example, set up a Google Alert for the term "freelance copywriter jobs," and you'll get information (and links) on new projects as they are searched for. Or set up one for the name of your client and keep up to date with key events as they happen.
Here's how to set up a Google Alert