In essence, there are three sorts of SEO practices, such as Black, White and Gray HAT SEO. Black, as its name suggest the entire story by itself as doing activities which are not suppose to be done at all. Most often, black Hat SEO strategies are tagged as illegal, though, it may results in permanent banning of the site.
Regardless, White Hat SEO practices are the pure and recommended activities to be performed in order to gratified online users to come up with genuine content as suggested by
SEO London. While, gray Hat SEO consists of some of the practices of Black and some of the White, though, it is not plainly illegal but it is also not suggested to employ.
Cloaking is the most common technique used in gray Hat SEO where fake information is set forwarded to present. It could be considered as a piece of code which shows proper content to search engines while fake to users, that might be in form of spamming.
There are some publishers who publish same content at various places, though which is not suggested by search engines. While, there are some sites which sense entirely similar regardless of fewer elements.
Some SEO practitioners intended to buy some back links in order to expect for higher PR. Though, if there is some sorts of mutual understanding that both of the parties will share something each other in order to have an extra, would it be considered as spamming activity? Though, answer is still unclear, while expertise stating that search engines should be informed of this.
Space out, paid links are also getting popular. Some practitioners make use of it to get more popular while some opting for it to get traffic. However, if it is done with an intention to get traffic, it should be counted as White Hat SEO while if it placed purely in hope of popularity, gray or black Hat is the ultimate tag and yet banning of site is also expected.