أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Black Hat techniques are nothing but attempt to game the system by finding its flaws, there are a lot of this type of techniques and tricks but majority of which don't work now-a-days as the search engines are getting more and more intellegent.
And moreover it is very unadvisable to deal with any of the Black hat techniques, as it may give you a short time boost of your ranking but will eventually penalize your website beyond recovery.