Web 2.0 has long been used and its effectivity is undeniable. Web 2.0s are very effective when it comes to link building, especially when you started putting them relevant, unique, and useful content and link it to your money site. However, creating web2.0s for backlinking purposes might seem like a bit of abuse when it comes to the backlinking system. Your web2.0 should look realistic like an authentic page that wasn't intentionally created for the purpose of putting a backlink to your money site.