Other wise this will affects your website negatively.
You should not have too much external links on your website.
While perhaps some sites actually took the information down, there is simply no legitimate reason to use a copyright takedown claim to do so.
Meanwhile, others are pointing out that the site already leaked information about who had accounts if you knew what to look for -- and, somewhat ridiculously had bragged about its security in the past.
As you my have heard by now, on Sunday, online security super reporter Brian Krebs revealed that the infamous "dating site for married people who want to cheat on their spouse," Ashley Madison had its systems hacked, with whoever is responsible claiming to have basically everything.
Apparently the site (and a few other similar sites run by the company) had 37 million registered users, many of which are probably a bit more worried about their information leaking publicly than they were a couple days ago.
Domain is either you or your company's ID in the Internet, when you apply to connect to Internet, they will give you protocol number. Every device connected to Internet has an IP number. Webmasters, publicists and ad networks assess your website that base on alexa rank estimation of your site or online journal.