did have time to look into it yet, on my todo list. Was making a markdown editor... have a few questions about the spec.
Re, nips.be/33
> Upon a parameterized replaceable event with a newer timestamp than the currently known latest replaceable event with the same kind and first `d` tag value being received, the old event SHOULD be discarded and replaced with the newer event.
This says nothing about the public key, I assume this is only for the same public key.
(otherwise others could publish to the same `d` tag and override content)