One other idea occurs:
An "unfunded posting page"
where new accounts could test-submit what they propose to post
"We" could sponsor such posts that have merit, paying the tx fee.
Wow, I really like this idea. Maybe make it so that once the tipped total exceeds the required sats, have it write to the chain
It would require a new page or sub-section under 'feed'? where unfunded posts could be triggered by sufficient tips - which then pays the tx fee. make sure OP gets subsequent tips.