I’d like to announce a new plugin, User Reports. This plugin was build for WordPress Multisite and provides reporting related to activity captured via the plugins Post Indexer (https://premium.wpmudev.org/project/post-indexer/) and Comment Indexer (https://premium.wpmudev.org/project/comment-indexer/). Note, these Indexer plugins are required. The User Reports plugin does not capture any information on its own.
The plugin add a new sub-menu page under the Users section for all sites as well as the Network Admin, http://screencast.com/t/e5wv3AVYB where you can filter the reporting information by date, sites, etc. So if a user can post in multiple sites you can capture that information. For now the plugin support Posts and Comments. But will be adding support for all Post Types in future release.
The reports can be exported to CSV or PDF.
Please download and test and report any issues via this thread.