Can confirm (for sharing; not so much for the reading stats, sorry). I run Calibre on my desktop; on desktops and laptops I use the content server for built-in online reading. For the Kobos in the house, they plug in and I click "Send to Device" for any new books. Kindles I hit "Send to Kindle" and it uses the email delivery system for it to magically appear on my Kindle. Androids and iPhones have myriad apps that will happily consumer Calibre's content server.

I keep the metadata up to date, strip Kindle DRM from the books I buy from Amazon, and maintain a giant personal DRM-free collection of books and comics (which Calibre also handles!). It's one of my favorite pieces of software.