Clicking on a migrated question now leads to an immediate header redirect to the target site.
For a new user, this must be utterly confusing. They asked a question on one site, and suddenly end up on another they don't know anything about, and usually don't have an account on. The explanation why this happened (
migrated from Stackoverflow.com) is small and extremely easy to overlook.
I also find it slightly annoying myself, and going against my instinctive expectations when browsing the site. The decision of switching over to a different site should be left to the user. Forcing this upon them feels wrong.