Not sure what blogging application to use? You can get a rough idea what’s going on by looking at the trends:

wordpress typepad movable type drupal

Whatever one might think about the value of Google Trends, this gives a quite clear picture. Not only Google Trends, other sources complete this picture:

See a poll on problogger or lifehacker, blogginpro even asks, if blogging and WordPress have become synonymous. There are also detailed comparison charts of the functionality. You can build a customized comparison chart.

And, for you as a web developer, what about the possibilities to extend your favourite blogging CMS?

wordpress plugin drupal module

This chart tells much about the extenting possibilities of WordPress. Focusing on my favourite two, WordPress and Drupal I can see:

2588 WordPress plugins on wp-plugins.net
2052 Drupal modules on drupal.org