The b5media WordPress mastermind, Mark Jaquith, has a great tip on merging multiple WordPress blogs.

Here’s my tip: do not select an existing blog user to “own” the imported content! Instead, create a new temporary user just for that content. Here is why: the imported posts may need some manual cleanup, like integration into the new blog’s category structure, or adding/removing tags.

Why? Check out his post for an answer to that. Wise words, take it from someone who’s merged 7 blogs into 1 successfully…