What is the visitors' HTTP User Agent stored in log_visitor_info used for?

Question

I was wondering, where in Magento the visitors' HTTP User Agent Information is used. The log_visitor_info table is pretty big (and for me it seems the user agent information is useless?).

I grepped through the code and all I found were the following three usages:

• Check for ignored user agents (anyway, not the stored user agent data but the one received from the helper) (see Mage_Log_Model_Visitor, _construct())
• Adding the user agent information in (Mage_Log_Model_Visitor, initServerData())
• Saving the visitor information (Mage_Log_Model_Resource_Visitor, _saveVisitorInfo())

Is there any other place (Reports, Menu item in the backend,...) where the HTTP user agent information is shown/needed?