I love this idea. (Similar to something I had been envisioning awhile back but for marginalia created while reading physical books offline) I hope they'll make a sleek way for me to export my annotations into a JSON file that I can import into a TiddlyWiki.

If I ever decided to host on my local machine (or if I find a way to host a node.js version in the cloud), this seems like the easiest solution to set it up.

I think I'd like this a lot, in fact, but it sounds like it has to be installed on a local machine.

Need to do more research.

TW Receiver may be a solution to hosting my TiddlyWiki on my own website. It allows for it to work with php.