The Devel module is such an indispensable part of any Drupal developer's toolkit that it's easy to forget that it does sometimes tinker with Drupal at a fairly low level. I was getting a perplexing error from an XML-RPC service I was developing as part of a Drupal module.

Greetings from DrupalCon DC 2009! It's been a great first day - lots of informative sessions, and a lot of fun to reconnect with so many people with whom I've crossed paths since getting into Drupal.

File this under "It goes without saying," but this one had me so puzzled for a time that I thought it bore repeating.

In general, a good best practice for any Drupal site is to put all third-party modules under your sites/all/modules directory; this makes for good portability when it comes time to upgrade the Drupal core, and makes it generally easier to keep track of what you've installed.

If you're working with a site with a lot of nodes, especially nodes that have been migrated out of another CMS or blogging tool, you'll probably find yourself wondering which nodes are floating around without any taxonomy terms, so that you can go back and make sure they're duly categorized.

Getting a raw list of node ID's and titles is simple with the following SQL query, which you can execute from the MySQL command line client, or PHPMyAdmin (which your web host's admin panel probably provides):