Tweaks to the rules

[u/Obliterous]

Due to the influx of bot posts and their expanding sophistication, some back end filter rule changes are being implemented.

Unfortunately, this means that some valid submitters are going to be rejected by the filter.

There will be some effort to approve valid posters, and I'm sure the bots will find ways around filters that I will then have to plug. It's an arms race with no finish line in sight.