Twitter power users are in for two good pieces of news this week, as there's a new version of the popular TweetDeck software on the way, as well as confirmation that users, even ones using the site for commercial purposes, won't be getting charged to do so, as was rumored.

If you're not familiar with it, TweetDeck is a stand-alone application that gives you more control over your Twitter experience than you'd get with your web browser alone. You can view tweets sorted by conversations, or lumped together for users who share membership in a common group.

The new version enhances that ability to follow conversations, including proper for support for hashtags, which make it easy for the software to identify what tweets are parts of which discussions. International users, or just those interested in what other Twitter users around the world are up to, will enjoy the new language translation feature. It's still a little rough around the edges, but it should translate well enough for you to get a general sense of what's being discussed.

If the current economic climate hasn't scared you away from the stock market, you might be interested in new TweetDeck support for StockTwits. The service lets you set up automatic searches for investment news and delivers it to you via Twitter.

Hoping to clarify a quote widely circulated earlier this week, Twitter co-founder Biz Stone posted a follow-up message on the company's blog. While it first looked like he was encouraging a change  in the company's business model that would begin charging users of commercial accounts, now he's dismissing such an idea, saying, "Twitter will remain free to use by everyone-individuals, companies, celebrities." There will be future developments that add ways for Twitter to make money from the service, but apparently charging for its use won't be one of them.

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