And that's not the main sites too: I can't get in the forums as well.

It happens from time to time.

In the meantime, you can visit one of the many other Elder Scrolls sites: http://www.gamesas.com/topic/1469452-where-can-i-uploaddownload-skyrim-pluginsmods/

The Nexus is rarely down for long. Check back in a few minutes. Or in an hour. You just need to have a little patience.

As a matter of fact, it's back online for me already.