I was talking to $PERSON from $BIG_COMPANY the other day, and they happened to mention that around 80% of their CPU time was spent on serializing and deserializing data ...
From the "Ideas I'm Never Going To Implement Myself" bucket: NoMail is an email service which doesn't store anything. Anything at all. Email received by NoMail is ephemeral and exists only in your client.
A (somewhat sketchy) connector between HTTP and postgres stored procedures ...
Image a WWW using Cryptographic Hash URIs instead of URLs.