You are WAY nicer than me. I am crazy about my Google Reader, but I'm also very selective. Unless you are a blogger I have an actual email/blogfrog/twitter conversation kind of relationship with, if you have a partial feed, I unsubscribe. I don't have the time.
I don't care if people post a lot in a day if their content is good - as long as it's not like 20 posts a day. I do this because some days - like today for instance - there were like 4 posts I needed to post & for several different reasons, today was the only day I could work it out. But I try to keep it to 1 or 2 posts a day.
And this is where I'm really cut-throat, but when I'm reading through my posts for the day - or every couple of days - I'm always thinking in the back of my mind, "Do I want to keep subscribing to this?" Although, this is really only for the people in the "Giving it a shot" folder. If you're in Moving on Up or Comment on These or Favorites, you're pretty much there to stay. I probably add anywhere from 5-10 new blogs to my reader per week & I probably unsubscribe from about 5 or more per week.
The way I see it, I just don't have the time. BUT I am really good about following the people who consistently comment on my blog. If you make an effort to make a relationship with me, then I will make an effort to have the relationship with you. I also make an effort to start new relationships, too, but if I read your blog for a while, comment, re-tweet, etc & you never reply to my comment either on your blog or through email - after a couple weeks, I stop reading your blog, too. I understand why people would do that to me. That's why I try to interact if you come to my blog.