My pet thesis is that there is absolutely nothing new about the internet (I mean as opposed to smoke signals and hieroglyph), except for 2 things:
1) maintaining the persistent weak links in networks and 2) integrated search (or probably more accurately ubiquitous, pandemic indexes... meaning the pulling out, and structuring of data into information from disparate sources)
Hence I take an interest in things that I think are really just something old, dressed up in jQuery or social media, and presented as new.
(I particularly hate the application of the word "cloud" to everything in tech and calling it new. "Hey, come and see our new "cloud" app"... what that thing this is your old desktop app with some marketing guff and a "cloud-" prefix..)
But I noticed a slight reversal, in that this website, differencebetween.info has loads of examples contrasting things to similar things.
As Linux Torvalds noticed when conceptualizing git, after much experience with subversion, is that its much more efficient to consider the difference of an object to something else that is well characterized, than it is to study the thing in isolation.
Difference between Nokia Lumia 520 and Karbonn Titanium S5
Difference between Blackberry Q10 and Sony Xperia Z
Difference between Conventional Oven and Toaster Oven
Difference between Mall and Department Store
Difference between Enquiry and Inquiry
Difference between Asus PadFone
Difference between Money Market and Capital Market
So to close the loop on the original premise, is this an example of diff for normals?
(but that presents an idea for a whole bunch of web startups,... based on some web interpretation of patch/grep/find/man - I suspect that google already has done "find", or maybe more accurately "locate", and wikipedia is effectively "man")