Awesome plugin, Donncha! I just wish I’d come across this earlier! The problem I have is that I already have several hundred posts across our 30 or so WPMU blogs. The plugin works great for new posts (it’s great that the permalinks point back to the source blog), but I can’t figure out how to grab all the existing posts to display in the tag cloud. Is there an easy way of doing this? Did I miss something?

I tried exporting all posts from the source blogs and importing them into my main WPMU blog but then the permalinks just point to this blog. Perhaps the plugin would notice if I exported and reimported all posts back into each of the source blogs?

Will your plugin pick up on existing posts if they are modified/republished or have their status changed in any way?

The only other option I can think of is to travel back in time and install your plugin before anyone started posting, but I haven’t figured out how to do that yet either. I’ll be sure to let you know if I do, though 😉