Originally Posted by RevTKS69

I'm not a WP expert, but I have several WP blogs, and so I search for information from WP experts.

The feedback that I have found is that any traffic over 10k is the threshold for WP. Anything over that and you are going into the never-ending battle to keep it running. This assumes that you are already using the supercache (etc.) plugins/mods to run it.

Also, some knowledge of how WP interacts with the database and php calls is necessary, because one plugin or badly coded page can result in excess database hits that just kill your performance.