There are many free web harvesting tools available. These tools can include email address extractors, data harvesters, phone number extractors or web page extractors. Many companies and businesses use this harvested information to put together recipient lists for ad campaigns or to collect and combine lots of internet research in one place. It is not the best idea to use free web harvesting tools to spam people, so you should try to use them in the best way possible. Free web harvesting tools are not all created alike. Before you download one to your hard drive, you want to make sure that you trust the company you’re downloading from. A lot of freeware can have spyware and malware attached, so be careful and make sure your computer is equipped with a good anti-virus program.