Search engines consider a website as spam if the website owner considers malpractices in promoting the website. So, it is very important to know the bad SEO practices that could harm the website. Here are some of the facts that you should be aware of:
Link buying: Search engines treat a website spam or redundant if they find irrelevant or unreliable back links. So, you should always be cautious while buying a back link from a link farm or else once search engines tag the website as spam it could damage the ranking and page rank.
Complex coding: Building a website using complex codes makes it difficult for the spiders of search engines to crawl. The robots fail to read the codes and do not consider as relevant to display it on its search engines result page. So, always use a website maker that will allow your website to be built using the simplest codes that search engines can easily crawl.