The tech industry, like every other, is built around fierce rivalries. There's nothing better than two companies duking it out for supremacy in a certain market. One of the most recent has been Facebook vs. Google. Until now, the two behemoths have been warring with each other not over products, but over Internet dominance. In August 2010, Facebook eclipsed Google as the top online destination. However, now, with the introduction of Google+, the search giant and the social network are dueling in the same ring. Many have pegged Google+ as a strong Facebook competitor, one so strong they see it one day toppling the 700 million-user service. And while that may be in the cards for Brin and Page's newest project, there are some things that Facebook does better that it will need to address if it intends to be the reining social network. Before you get an invitation and make the switch, check out the 5 Facebook Features That Google+ Lacks.