Over the past week, we have seen tremendous usage growth on SimpleWorker. Our queues were getting backed up and our poor little workers just couldn't keep up. Well we threw some horsepower at the problem... lots of horsepower, and now we're running smooth again. Sorry for those who had extra long wait times, we're growing and learning how to do things better with each and every day. We plan to keep adding more and more capacity as we go so we can get to the point where large spikes in usage won't affect other users.
Also, we will be introducing a new pricing tier (cheaper) for those who have workers that don't need to be timely, perfect for massive batch jobs like we were seeing this past week.