If you were getting 0.01 upvotes at your posting frequency, then your upvotes were actually too high, and that's why you were moved. Your estimated WEEKLY value is 0.02 per share (with upvoting bonuses).
As pools grow, members that are not keeping up may be moved into lower pools. This is one reason the lower pools are now rate limited (one or two upvotes per day, depending on the pool).