Thanks a lot for your help. You are right about placement of community - I have mine way down in the post, but it is before other non-Lemmy groups.

One silly error I made when I started testing was that I tried to send the message non-public, so I wouldn't send garbage to Mastodon followers. That didn't work for getting it to Lemmy - I had to have my test post be public before I started seeing them in test lemmy.ml.

Also, I found that putting "[News]" in front of the title in Mastodon post doesn't carry over well to Lemmy, so I don't do that now.

Here is my simple prototype:

Title of news article

text, text

URL of article

hashtags (too many)

@palestine AT lemmy.ml (but entered correctly there)

2 more @ mentions to gup.pe groups

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Thanks again for your posts!