I think it can help if you are extremely busy. I use scheduling feature that Hootsuite has and it really comes in handy. Like any tool I believe you should use it wisely. Don't just continually send out tweets automatically over and over again and you realize no one is reading them. Scheduling your tweets can be very useful especially if you want people to read it and if you find that you want to tweet something and it's late at night you can just schedule to post it in the morning. I have done that on many occasions. I absolutely love that Hootsuite offers that feature.
