Is there a well-understood hashtag or abbreviation that means: "Worth discussing but impossible on Twitter"?
If not, how about #WORDBIT ?
To me it includes a hint of "Am I right that you wanted a careful answer?" and a dash of "Are you kidding?"
It also carries a strong nudge in the direction of, "Email me for a serious conversation on your good question. Or visit me on a more accommodating platform like Google+."
In the spirit of Wittgenstein ("we're not crazy, just talking philosophy") it could also suggest, "I'm not long-winded, just careful."
I think the main reason I reacted against #wordbit is that, to me, the acronym was very counterintuitive. I couldn't help feeling that it wanted to mean something about words &/or bits, computing.
Thus, imagined frustration of someone saying to themselves "word-bit!? wtf does that have to do with anything?"