If you really want to slow down and hamper your article marketing efforts, put a period at the end of your valid URL. It’s a sure way to stop the positive flow of active links coming back to your website. Why? Because in most cases, it produces an invalid URL.
Bad example of what NOT to do:
Visit my website at http://Christopher-Knight.com/.
Good example of what to do:
Visit my website at: http://Christopher-Knight.com/
Now, my webdev team is smart and they have configured our dedicated webservers to deal with it for our URL’s, but most (actually the greater majority) of websites are virtual hosts and they don’t support a period at the end of a URL.
That means if you put a period at the end of a valid URL and you put your article into distribution, you’ll find that the smart article directories like ours remove your period manually but this is not the norm!
End result: NEVER NEVER NEVER put a period at the end of a valid URL, ok? :-)