I have my blogs set up into distinct categories: librarian, culturetech, and kids. I am trying to separate my work from personal life in these distinctions, but it is hard. The only one I know isn't work is kids. In my culturetech folder I use many blog posts from the blogs I follow as inspiration. Or I find out things for work. In fact, from Lifehacker, I found a tip that cut down on the amount of blog posts I had to slog through. Now I show my blogs in list form instead of expanded, and with the categories don't have to click through to each single blog.
So even though that seems like a lot, in reality I only read in between 20 and 30% of those 46 blogs (with the exception of Free Range Kids 100%!). When I am sharing an item, I've really only been doing that so I can remember to go back and read it in depth later.
From your 46 subscriptions, over the last 30 days you read 771 items, starred 0 items, shared 30 items, and emailed 7 items.