Do you want know if we have followed some common Twitter users? Or do you want to know if we have been followed by some common Tweeps? Just tell me your Twitter username, and I will @ you the answer. Or you can try to use the free service offered by WhoFollowswhom website.
WhoFollowsWhom is a website that lets you see who any 2 to 5 tweeps follow and are followed by in common.
You just need to input 2 to 5 twitter usernames, and click the Find Out Results button, then you will see how many Followers and Following those tweeps have in common. Take @barackobama and @freenuts for an example:
From the above image, you can see that @barackobama and @freenuts are followed by 11 and following 60 Twitter users in common, although President Obama dose not play with twitter himself, but it is still cool to find out that there are some commons between us.
When you find out the commons among those twitter users you check out, you are able to do at two things:
1. Share the results with those tweeps or your followers on twitter.
There is a share URL under the result text, just copy and past it to your twitter client.
2. Check out those followers or following they have in common.
When you move the cursor on the twitter users’ avatars, you will see their names, locations, the quantities of following, followers, and tweets.
By the way, since the share URL is unique, you can just input any URL like below in the browser address bar:
http://whofollowswhom.com/u/freenuts/barackobama
Just replace the twitter usernames with those you want to check out. So, in order to find out the common followers and the following we have, you just need to replace “barackobama” with your name. Easily, right? Please @ or DM me the URL once available. 
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