Clicking some links produces page with two links

[Willm]

When I click on links in some websites, eg http://cleantechnica.com/ I get a page with two links and a noscript icon on the left. The two links are like this:

http://cleantechnica.com/2013/11/22/.../
http://cleantechnica.com/2013/11/22/.../186.142.193.235

where '...' is the page address. The IP address at the end of the 2nd line is similar to my IP (the 186.142 is correct) but not exactly right

Why does this happen and how can I stop it?

Actually in writing this question, the above website no longer behaves in the same way (maybe I clicked on the noscript icon in the page presented).

[Giorgio Maone]

The page you're not seeing anymore might be an (transient) error page from the web site or from your ISP, which dependent entirely on JavaScript and thus prompted NoScript to scan the source code for potential links to present you in an usable form.
Hard to tell for sure, though, since it doesn't happen to me either, now.

[Guest]

Oh, I thought it was going to be something that everyone had seen. I get it from many websites, not just the one I mentioned....