There are a lot of SEO strategies going about and many of them don’t actually work. Some are outdated. Others have simply been made up and are in common use because they sound good. Both of those categories can end up hurting your ranking. Be it because you can only use so many strategies or because Google and the other search engines now actually penalize you for using them.
For that reason, it always helps to take a look at the common strategies that are being used out there and which ones might actually end up being counterproductive. After all, we don’t want all that hard work we’ve put in to be rendered useless because of a few small mistakes!