On my Stack Overflow Careers profile page, I was trying to add a new GitHub repository, which wasn't showing up on the list, so I clicked "update/add all my repositories". That was a mistake - the repositories I didn't want on my profile all got added, the new one didn't show up, and worse, I have no idea how it'll be frustrating to take them off. I'm sure there's some option somewhere for removing repositories from my profile, but I'd like a to remove them all at once.
EDIT: On a side note, removing them manually is a little inconvenient too; could we have this option on the import page, please?