My general practice for answering here at programmers.se is to browse the Questions list, scrolling down until I see ones that I've read before. Lately I've noticed that a bit farther down, there will be one or two that I haven't seen before. Then I see this:
migrated from stackoverflow.com
Would it make more sense to have the migrated questions timestamped at the time they were migrated, rather than the time they were originally asked on the other site?
By the way, I'm very pleased that there's now an automated migration path from SO.