I have been using Hootsuite as one of my Twitter clients for some time now and I really like it. One of the newest features that they have is message scheduling. For instance, if I want to promote some of my new photographs, an event, etc., I can now schedule it in advance and it will go out automatically at the time that I choose. This allows me to be more productive and to do things that I want more time for...like take photographs! As a business owner, I find this a great networking tool and an easy way to promote my work. Check it out!