Actually, the first thing I am trying to do is compare Marketo reporting to my reporting in SFDC to make sure the numbers reflected in Marketo are accurate. I'm looking to move toward using Marketo in place of SFDC for reporting duties.
When I looked at the Leads By Month Report in Marketo for June 2013, it did not match up to what my SFDC numbers are reflecting, but since I cannot see the individual leads Marketo is including in its calculation, it's very difficult for me to determine what Marketo is recording and what is being left out.
However, in the future, once I know Marketo reporting matches up with SFDC, I will want to view things like leads by month with the individual lead breakdown, and view fields such as first and last name, company name, and industry so I can record and identify trends over time.