This looks like a useful new feature on Inoreader: Convert Almost Any Webpage Into RSS Feed With Inoreader’s Web Feeds
Inoreader will let you subscribe to updates for web pages even when those pages don’t offer RSS feeds.
Whenever you see a web page with a series of updates, be it news articles, blog posts, classifieds, product updates, weather alerts, practically any series of HTML links, Inoreader should be able to present it as an RSS feed. This feed will then be continuously updated, and any new links added to the list will pop up as articles inside Inoreader. Just like any regular feed.
I’m guessing it does a little screen-scraping and looks for patterns in text.