It takes time to find content to vote on
My brother was talking about this for curangel, which has a dollar limit it will vote to before rejecting the submission. The problem is, the unrewarded posts are often terrible - finding decent content is hard and will only get harder. Finding 100 pieces a day is near impossible.
That is why I try to keep building and adding to my various list. A lot of the people I add just disappear. I follow a few that re-blog some new users, like steevc, edprivit, and angryman along with a few others, and I follow a few contest that attract new users because they are simple and uncomplicated. Scrolling through the new user list is a nightmare.