Major leadership changes Thursday at Twitter renewed questions about its business prospects -- was the replacement of CEO Jack Dorsey by fellow co-founder Evan Williams a shuffling of deck chairs on the Titanic?

But today VC backers of the microblogging service interviewed by wired.com Friday insisted they remain bullish, and Bijan Sabet, a general partner at Twitter backer Spark Capital, revealed that new revenue models will be unveiled in the first half of next year.

For now, they grow weary of the question.

“It’s like the stupidest question in the world: How’s Twitter going to make money?," said Union Square Ventures’ Fred Wilson, another investor. "It’s like 'How was Google going to make money?'

Commentary:
....the lurking question is how will the social networks make money? Many say it will not happen and social networks will go the way of the bubble - bursting and losing VC's mucho denero. Time will tell in the 'Next 10 years'.