The Klout score is probably the most useless type of statistics I have ever seen. After thinking about it for a while I decided to opt-out and delete my account.
When I wanted to do this, I found out that it was not so easy to find the page to delete my account. I had to use a search engine to find a blog post that mentions the link. For your convenience, here is the link if you plan to remove yours in the future:
The blog post I got this link from is linked below. It’s a recommended read and sums up exactly how I think about Klout. I would not be surprised if you deleted your account too after reading it. What I did not know for example is that Klout also builds a profile of people that don’t have an account with the service. By using the opt-out link above, you will prevent this from happening and have your data removed from their databases.
One final tip: if you deleted your account, make sure you also revoke access from Twitter for Klout and remove the Klout app from Facebook in your privacy settings. Otherwise they still have access to your data.