Find contacts and track changes

The agent is able not only to collect a one-time collection, but also to observe over time - to periodically log in and compare “what was/was.” A one-time collection of contacts is a table of fields: name, website, phone, email, application form. Monitoring is the same approach, but on a schedule, with changes recorded. Observation mechanics: the agent saves the previous page snapshot and compares it with the new one; It’s important for you to name exactly WHAT is considered a change, otherwise he will inundate you with noise about rearranged banners. Technique: set the “trigger” (signal condition under which to report) narrowly - “report only if the price has changed or the word promotion appears,” and not “if something has changed.” The second technique for contacts: ask the agent to mark “confidence” and the source of each field - mail taken from the site’s basement, more reliable than one found in a third-party directory. Insider: for monitoring, always set the frequency and method of notification - once a week, with a short list of “what has changed.” A common mistake is asking to “monitor the site” without defining change and frequency. The agent is either silent or makes noise about every little thing.