FAQ-type feature

Yes, perhaps I should describe the input fields in more detail, I'll think about something.

a specific date range

I have added a date range in the new version (which is not yet online), but this only works if at least one tag has been entered. Maybe you can do something with it.

Otherwise there's https://steememory.com - it takes a little while until all your posts are displayed, but it's a nice overview.

Thanks for your suggestions.