Buffer: Send Social Media Updates
Looking for a quick way to send out regular Twitter, Facebook and LinkedIn updates, without spamming your followers? Then check out the Buffer Extension, which lets you easily share content on the above social networks using a delayed schedule. What's more, you can set a specific time for your updates to be published. Finally, the service also tracks everything you share so that you can check the effectiveness of your messages.
The Buffer service is free; a paid upgrade option offers additional perks. There's also a Web-based Buffer social media dashboard for Android and iOS users.