It's not hiighly featured, but use the "news" module to create a WB blog. It even generates the RSS. There's a small modification you can make to group it by month and category as well. (I think there's an experimental tag utility too).
If you want to keep using or even archive your Nucleus blog (and don't want to export it somehow) you can use one of the wrapper page types (one comes built-in, the other is an addon).
What is the "modification you can make to group it by month"? I would like to implement this feature.