This module allows an event web site to charge fees for attendance.
The module assumes that the entire site is for a one-time event, and the fee is fixed for everyone. So this module is suitable for subdomains (e.g. 2008.yourconference.org, 2009.yourconference.org, ...etc.).
Views integration is provided, with several fields exposed to views, such as gross amount, net amount, currency, and whether the user has paid or not. Note that this requires the bio module so users are represented by nodes.
If you want a more granular event payment solution, then consider using the Signup Pay for a node module which allows this and much more.
This Drupal module attempts to provide context for content items by displaying a view block with links to other similar content. Similarity is based on the taxonomy terms assigned to content.