A link farm is a website or a group of websites, which are dedicatedly created only for the purpose of increasing the link popularity of each other websites by increasing the number of incoming links.
Important things to consider when it comes to link farms:
- If you are using link farming activities, then stop them now.
- If you have unknowingly used link farms to support SEO, then take a corrective action now.
- Avoid all black hat SEO activities
- Keep enough content and interlink the pages