Since we currently have 32345 followers on Twitter compared to 1302 followers here, we're still writing most content for Twitter and cross-posting it. That means our content is written around Twitter's 280 character limit instead of writing it for the 11000 character limit on infosec.exchange.
In our most recently posted thread, we kept it as 280 character posts with the exception of merging 2 tweets with a split sentence. We could also start merging tweets forming a larger natural paragraph, but 280 characters is long enough that it's usually a standalone paragraph.
A benefit to keeping things at least partially split up is people can boost or reply to specific thoughts instead of replying to the thread as a whole. We feel that's very useful especially most people have a 500 character limit, not 11000, so they can't waste characters on quoting.
One reason to merge everything would be that most fediverse clients appear to lack displaying threads as collapsed before you open them as Twitter does.
Which cross-posting approach would you prefer?