Brand new Toodledo user. Loving it really, but I agree that simple multi-edit is for me a MUST feature. It's especially a barrier for new users importing data. And honestly, this seems like it would be a ridiculously easy feature to implement. The lack of features like this is what screams "web app". Imagine trying to use an email client that didn't allow you to mass edit... Ctrl-Click would be awesome.
Please add this Toodledo! It really can't be very difficult compared to all of the other cool stuff you've managed to work into this.