In general terms, web harvesting is known as the art of data collection from websites, mainly for data analysis. These data can be used for competitive intelligence, financial analysis, and blogging.
In fact, various web harvesting tools have made it a lot easier to pull together information on competitors and that may include financial data of all types, prices, and press releases.
Difficulty in Web Harvesting
The difficulty for web harvests happens when their targeted websites use a unique technique called IP blocking. Various websites can easily recognize that a large amount of traffic is coming from one particular IP address and block the web harvesting from that IP address from using their website on the whole.