Impressive, since "network effects" are what keeps people on a platform. Why move off Xitter or FB when everyone's on there, and not on the new place? Keep moving a significant fraction of a million people every week, and pretty soon, it'll be where everyone is.
My partner, who is very non-technical, signed up for a BlueSky as well this week: "all the teacher blogs have declared that they are moving over". Looks like everyone has had enough.
Clicking the 'Activate' link prompts you to enter your shoe size and postal address, so that you may receive a shark plush toy and your own pair of The Socks.