Open sourcery
Dabbsy's note about the perils of open source referencing remind me of my dealings with a certain word-puzzle iGame. This game lets you look up the definitions of the (occasionally strange) words it thinks you should have found in the solution. Sometimes these definitions are simply weird, or garbled, and sometimes downright unhelpful.
For instance, the frequently encountered word (FEW) "TEDS" (no lower case in this case) is simply defined as the plural of "TED". What is "TED", you may ask? Well it's never been a "solution" word so you can't look up its definition, though it does qualify for bonus points as "yes its a word but not one we're looking for". There's a lot of that. This iPuzzle is fond of Greek letter names, except when it isn't, and also dabbles in foreign currencies. It's oddly fond of names from Chemistry, too. Who would know of "ILMENITE"? Well, me, because I did a lot of Chem before realizing where the real money was.
Anyway, the answer to the mystery within the enigma turns out to be --- Wiktionary! Yes, these iMerchants grabbed a copy of said collaboration, without attribution, and have been peddling its wares ever since. Boringly, "TED" is a contraction of "Teddy Boy" according to Wiktionary, and you can look that one up for yourself. All it took was plugging one of the odder "definitions" into Google.
In the department of missing houses, I was born into one that appears on Street View as a magnificent warehouse facility, and the subsequent residence was visible as so much green grass before the street itself was expunged from existence. A later one of similar Victorian vintage has been saved by the time honored method of turning it into student flats. Pity about the crack house a few doors down....