We recommend anyone who works with Social Media to use the Buffer.com service (which includes App to Andorid and iOS, Firefox plugin and web service). With Buffer, you can plan your marketing in a calendar in advance and save a lot of time. With Buffer, you can also send updates at the same time to all your channels and also save a lot of time.
An invaluable tool for those who feel it's easy to keep your social media active. Read more about Buffer at www.buffer.com.