One-sentence summary card

some blog posts have snappy titles but their content is kinda hard to remember (but you keep seeing them linked or whatever, so it gets annoying if the main idea isn't available in your mind). and yet, if you think about it, you can condense the content of the blog post into a single short paragraph, or single long sentence. so what i've been doing (and time will tell if this is a useful strategy or not) is to simply use a double-sided card, with the post title on one side and the summary on the other.