I've often heard this considered, but am wondering if anyone has done actual work with one or the other or both of the following:
If you want the audit log from within SharePoint itself, it's a bit harder. You might be able to get them via scripted input, via database tracking, or via 3rd party add-in writing to Windows event logs (and from there to Splunk). It's a bit sales-oriented, but they have some information here that may be useful if you're trying to get those -- http://community.bamboosolutions.com/blogs/bambooteamblog/archive/2010/02/16/filling-the-gap-in-shar...
Thank you for the great information!