First, I'd like to say Wow!, your site is excellent! I am an avid fan of minecraft, and while working on my own Minecraft info site (for my son's website), I came across yours, and love it!
Next, I'm sorry to say I found a typo. This may seem like a minor thing for me to be creating a forum account to report, but I know that in creating a site like this, accuracy is important to you, and if no-one mentions it, you might not notice.
The typo is on the item ID page, for the Fire Resistance Splash Potion
You have the ID as 373:16378
It should be 373:16387 (according to this wiki page
I am a long way from completing my own site, and expect to be working on it for several weeks, as it will have it's data stored largely in an SQL database, and I still need to write all the PHP scripts.
Thanks again for providing a great source of information in an easy-to-read format!