I wanted to keep the title---and the question, for that matter---generic, but my use case is that I want to make a backup of my posts on Tildes, and I'd fancy automating that with a script that curls up my user page and downloads fresh stuff from there periodically. So for my personal case, the question is that is this allowed / welcome practice?

The generic question is that is it welcome to scrape Tildes' public pages, in general?