CSS Watermarks
This article shows a way of creating simple and resource-efficient image watermarking and copy protection using client side CSS rather than server side graphics libraries

Fade in and fade out popups
A set of simple JavaScript functions to create fading popups – much like ToolTips – with some JavaScript and the onMouseOver and onMouseOut events.

MySQL debugging in PHP
If you work with MySQL and PHP and dread the often insufficient error reporting that MySQL does using mysql_error(), this article might help. It describes a few simple routines, which can trace down the origins of faulty or slow SQL-code inside your PHP.

Amazonification
People who read this article also read... well, what did they actually read? How can we find out? And can we use that information for anything at all?
This article covers a few thoughts on how a site can gather information on user’s behaviour and utilize it in the way that many larger modern commercial sites do. And it shows a way of creating a relevant content list using a simple set of PHP tools and a MySQL database.