I recommend also including the text of the tweet if you really want a permanent record on the blockchain.
Thanks. Understood. Sometimes it's just too time-consuming to edit my posts to fit the constraints on memo.cash. It's just easier to post a link. The posterity isn't critical.
As soon as the Filecoin mainnet launches, I plan to add a REST API at FullStack.cash to allow people to pay BCH to store data on their network. I think that would be a nice compliment.
Also, some are using member.cash which uses the same memo protocol but can split posts across multiple memos, so length is no longer a limitation. And posts are visible on both sites.