While moving my live bookmarks over into a reader, finally, I was greated by these statistics from Google after importing my feeds.

Trends

From your 16 subscriptions, over the last 30 days you read 0 items, starred 0 items, shared 0 items, and emailed 0 items.

We have 6 variables of data shown to us, each of which can be extended internally by Google. I.E. - What were the subscriptions to? The genre? How often were the read? How many items were read in this time period? Is this a sharing person, who did they share with or email to (this will be very important with researching who in your social filter has the highest influence on what you are reading and learning).