Blogger added labels a while ago, which really fixed the reason why I had two blogs (this one, and my review one), so I just copied and pasted the review entries from the old review one into this one. Yay.
I preserved the dates where I knew what they were, but some of those reviews were copied across from a previous review location and I had lost the original dates, so lots of them are just posted in the same day. New reviews will of course have suitable dates attached to them.