A component called the RollingLogFileProvider is now freely available from the Downloads page.
The RollingLogWebEventProvider provides a mechanism for the standard ASP.NET health monitoring API similiar to log4Net's RollingFileAppender, or the Enterprise Library's RollingFlatFileTraceListener.
To use the RollingLogWebEventProvider requires no additional source code, only some additional ASP.NET health monitoring configuration settings.
For more details read on...