It's cute when a person, learning as she goes, comes up with something that's been already invented. Only goes to show she understands the field. [1]
It's unbelievably irritating when something that was widely implemented 10 or 20 or 30 years ago (and then even improved significantly) is now asserted as the next big thing. C'mon, be serious -_-' [2]
[1] a nice guy thinks of swap (in userspace) just to hold strings of arbitrary length, calls it ``backed by file storage'': http://9fans.net/archive/2011/02/94
[2] no example I can think of ATM; but perhaps the above one could fit?