Sooner or later you are going to have to instruct someone how to set something up on your web site. When you do don't make this common but simple mistake.

You might be writing some sort of how-to article, providing setup instructions for a script or even giving away details on how someone [...]

 
If you've managed a web site for a long time then I'm sure you're familiar with custom 404 pages. If a visitor types in the wrong URL or comes to your site through a bad link, you can send a user to a special area.
You can take this a notch up and [...]