What 5 Top Social Media Sites are Worth

Social media site G+, a community of professionals, entrepreneurs and academics, put together this detailed infographic .

Valuations of social media companies are found below:

1. Facebook – $75 Billion
2. Twitter – $ 7.7 Billion
3. LinkedIn – $ 9 Billion
4. Skype – $ 8.5 Billion
5. Groupon – $ 25 Billion

But are they overvalued?