also, I probably don't want to share a url/uri that contains my email address on Twitter... (I guess it depends if Twitter would _then_ ingest the image to the

also, I probably don't want to share a url/uri that contains my email address on Twitter... (I guess it depends if Twitter would _then_ ingest the image to their servers or simply continue to reference the upspin url/uri publicly - which was the original use-case)