Rescuing a blog that died in 2013
Every importer here reads an export file. That works right up until the platform is gone — and then there is no export to ask for, no admin to log into, and no account to recover. Posterous shut down in 2013. Blog.cz is gone. Your host is next, eventually.
For those blogs the twentieth import source is the Internet Archive.
Feed mode: what the crawler kept
The Archive did something useful without meaning to. For years it crawled blogs' RSS feeds — over and over, every few weeks, whenever a crawler happened past. Each capture is a snapshot of the last ten or twenty posts at that moment. Line them up oldest first and the overlaps reconstruct a history nobody saved.
That is what the importer does: reads the CDX index for the feed's address, deduplicates by digest so a hundred identical captures cost one fetch, pulls the original bytes through the id_ endpoint so the Archive's own toolbar never lands in your posts, and merges the overlapping windows the same way a re-import merges anything else.
Images come back through the same time machine.
