Stone Tweaks Twitter Stance

Co-founder Biz Stone wrote a blog post that elaborates on a suggestion he made earlier about monetizing Twitter. The crucial stuff:

"Twitter will remain free to use by everyone--individuals, companies, celebrities, etc. What we're thinking about is adding value in places where we are already seeing traction, not imposing fees on existing services."

So businesses already using Twitter can chill: they won't be charged extra for what they're already doing. Stone seems to be saying -- and we write that tentatively, because he leaves a lot of room for interpretation -- that only add-ons will cost anything, unless he means Twitter plans to bring ad support to high-traffic areas. (Hot hash tags and Summize search results look prime for this.)

"[We] hope to begin iterating on revenue products this year," he added.

Sounds like Jeff Bezos et al. are starting to tap their watches.