Nice tutorials Scrowler! I'll publish the MD5 one right away, but can you embellish the cookies/sessions one with a few examples on how to store/retrieve values, and especially how this relates to PHP variables? I think this would make the tutorial much more worthwhile!
Oh, and if you fancy, how about creating an introduction tutorial on mysql/php that shows you how to change variable values, pull information and display it, etc. Its something I get asked all the darned time, and there is no tutorial out there that puts it in the beginner to intermediate setting - they usually talk about utter basics, or drone on with the advanced stuff...
Edit: md5() tutorial now online over at http://biorust.com/index.php?page=tu...etail&tutid=99