And, before someone suggests the obvious, yes, I've considered reaching out to some users of my service that are active investors, founders or business partners

And, before someone suggests the obvious, yes, I've considered reaching out to some users of my service that are active investors, founders or business partners of Twitter. But I want to respect their privacy if at all possible and knowing the story behind Twitter, most of the original folks have moved on, it's a different business up there now (great background info in Biz's latest book, worth the read).