Automate Daily Social Media Updates

I have a few restaurants clients and would like to a program that would automatically be able to update their social media profiles (twitter, facebook) each day with their daily specials. I've looked at sites like Tweetlater, and the only problem is that you have to add each tweet one by one. I want a program that can read from a text or csv file with 30, 60, 180 or more updates...going out 30 days. A service like [login to view URL] can change emails or text messages into an update across the social networks. So, if you can build something that automatically sends emails or text message, that can work also. It just has to be abel to do it across several accounts.