If you work on a multi-person social media team, you’ve likely encountered issues coordinating responses to online conversations. You’ll spot a mention of your company and reply to it, only to find that another one of your colleagues has already replied, or that there was a reason they hadn’t done so.

Tools like Radian6 accommodate built-in workflow management to help teams to coordinate interactions across multiple platforms. However, they have their shortfalls.

Now we have a new kid on the block. CoTweet, which bills itself as “a platform that helps companies reach and engage customers using Twitter,” is a solution for companies managing teams of employees across multiple Twitter accounts.

I participated in CoTweet’s closed beta testing period, but it recently emerged into open beta meaning you can sign-up and try it yourself.

Some of CoTweet’s key features:

• Multiple accounts – nothing that tools like TweetDeck and Seesmic Desktop don’t already offer, but a must-have nowadays for large companies and agency types/power-users like me who need to juggle several profiles.
• Multiple users – CoTweet lets you invite multiple users to Tweet from an account. You can coordinate who’s “on duty” at any time, and assign tweets to other users (which triggers a notification email).
• Conversation threads – one short-coming of some other systems is that they don’t allow for threading of conversations over time. CoTweet rectifies that, allowing you to see conversations between your team and any person over time, see which tweets have been replied-to and ensure you don’t contradict an earlier response from a team-mate.
• Integration with bit.ly – TweetDeck and the like let you use bit.ly to shorten URLs and an even link them to your bit.ly account, but CoTweet integrates the analytics from bit.ly into its interface.
• Web-based – while I have no problem with downloadable clients, there are plenty of people around who don’t have that luxury thanks to restrictive IT policies. CoTweet is browser-based, so there’s nothing to install.
• Cotags - CoTweet defines Cotags as “short signatures that allow you to identify yourself as part of a message while sharing an account with multiple people.” It provides transparency as to who is tweeting when multiple people could be posting. We’ve manually entered “[initials]” for our clients in the past; CoTweets lets you automate that so you never forget.
• Persistent search – TweetDeck’s key feature early-on was its integration of persistent searches into your interface. While CoTweet doesn’t quite do that (you need to go to a search screen), it does provide persistent searches that are fully integrated into the interface.

Overall, CoTweet is a powerful new tool for companies managing multiple Twitter accounts and users.

What are your early impressions of the service? What stands out for you, and what would you change?