Vladimir Prelovac

No frames removes the browser frames sometimes imposed on your site.
It has become a trend for top sites especially news and content aggregrators to show your site inside a frame (if you see a site toolbar on the top of the page it’s usually using a frame).
Basically the visitor never leaves the site using the frame although they are viewing content created by you. This is done for multiple reasons and one is to improve the metrics of the site using the frame as ‘visitor time on site’ will improve only for the site using the frame and not you.
Purpose of No Frames plugin is to detect these cases and break your site free from the shackles of the frame, thus presenting the user with your full page.
This not only improves your visitor experience but your site metrics as well.
Changelog:
v0.2 
– Disabled it for admin panel
v0.1: 
– Released first version
Plugin by <a href="http://www.prelovac.com/vladimir" rel="nofollow ugc">Vladimir Prelovac</a>. Looking for <a href="http://www.prelovac.com/vladimir/services" rel="nofollow ugc">WordPress Consultant</a>?
<h3>License</h3>
This file is part of No Frames.
No Frames is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
No Frames is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with No Frames. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

No Frames

Kaspars

Set any page to be used as the 404 error page under “Settings > Reading”.

Custom 404 Error Page

Use any static page as the 404 error page.

No Frames vs Custom 404 Error Page