This is the final piece remaining until I can give polo a link to a 'working blockexplorer' since they can't seem to figure out the local blockex on their end.
They/we need an external Block Explorer, because the built-in one is self-referential (it shows what the node itself is doing). It's helpful for quick reference, but if a forging node (like Poloniex) starts spinning away on it's own fork, their own block explorer can't show that. They need the external one to check if their blocks are getting out to the network.
I checked out the one at burstkore, looks good, nice work!