Answer:
Google Alerts
Step-by-step explanation:
Google alerts is a notification services provided by google in order to detect how much a certain word or terms were being said on the web.
If you use Google alerts service, You can set up the name of your product or company as the key word and the alert will send you notification in case your product or company is mentioned in online conversation.
This service can be used to measure how well your company's reputation is within online communities.