If you manage more than one Twitter account like I do, you know how time consuming it can be to follow your followers, reply with a Direct Message, etc. To help me manage multiple accounts, I use Tweet Later. This productivity tool is free and it allows me to manage all of my Twitter accounts from one place. I can even "vet" my followers. In other words, I can auto-follow or I can review each follower to see if I want to follow back. I can even mark those I don't want to follow - such as the numerous porn sites - as spam. It's a useful tool. Check it out.
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