Is Twitter suddenly in a dangerous place, risking alienating users by becoming far too corporate, while failing to make any cash from those feeding off it? Three incidents in 24 hours have provoked that question.
First, I was invited by BBC colleagues to speak at an internal "summit"on the use of Twitter in our operations. Then I saw our story about the marketing agency promising to buy Twitter followers for clients. Finally there was a press release from a PR agency boasting that its client's product had dominated conversation on the micro-blogging service for an entire day.
Now mine is just one of many organisations suddenly scratching their heads over the potential - and the pitfalls - of using Twitter, but the fact that we and others are holding seminars about it is a sign that this network is becoming less social, more corporate.
And what about this Australian "social media marketing agency" - scary enough in itself - which thinks it can make money by selling me and other Twitterers to anyone who wants to buy us?