Factual error: When Clive Owen is chatting on the internet to who he thinks is Anna, you can see the URL in web browser. The domain used is "www.nopop." It's impossible for the domain to be missing its top-level suffix (eg. .com).
Suggested correction: It's entirely possible for "nopop" itself to be a top-level domain, although at the time this movie was made, it wouldn't have been in real life. There's nothing inherent to DNS or the internet that would make "www.nopop" not work as long as it was a valid, resolvable hostname on whatever network the character is using, especially if it was some kind of VPN or underground network for anonymous hookups.
There's a dot at the end of "www.nopop." Details matter.