Why is Pinterest so important? Where to begin. How bout a list?

According to Google Trends, Pinterest is doing better, and growing more consistently than Google Plus. It's less likely than Google Plus to be a flash in the pan.

• It drives more traffic to websites than Google Plus does.
• It’s more fun than Google Plus. Google Plus is like eavesdropping on a bunch of nerds who aren’t really there. That’s what it feels like.
• More general audience people like Pinterest. There are a lot more regular people than there are nerds. Remember the size of the crowds at the football game vs. the chess club? Me neither- I didn’t go to chess club events. Pinterest will be bigger than Twitter- it’s just a matter of time.
• Pinterest is growing fast and has yet to be hammered at by the major media, while Google Plus petered out after its initial media attention. It’s going to explode even more in the next few months.
• Pinterest is one of the top 100 sites on the Internet.
• Pinterest is the fastest growing website EVER. 10 million monthly unique views faster than any website ever.
• Pinterest is incredibly sticky- I mean you keep going back to it over and over, because it’s always new and interesting. Bored? Tired? Open up Pinterest – it’s like watching TV but not as annoying.
• Pinterest is stealing the thing in social media that people engage with the most on Facebook: photos – how much of Facebook’s thunder will it steal, in the end?
• The primary action on Pinterest is repinning, not liking or commenting. That’s as if the main thing people did on Twitter was Retweet, or if the main thing people did on Facebook was Share. Viral activity is primary to usage. I can’t tell you how huge that is, and how much it explains about Pinterest’s exploding growth.
• You don’t have to create anything or necessarily upload anything. Just tell us what you identify with by repinning it. This makes it so easy to use and so easy to go viral… it’s really a social marketer’s dream waiting to happen.

Pinterest is one of the top 100 sites, shown here vs. Twitter. Clever Google has Plus on a subdomain, so we can't show it separately on this chart from their search engine.