I did look it up. Nowhere on
any site does it say "Gen 5 shaking spots are equivalent to PokeRadar Chaining".
Did you misread what was
directly quoted from Serebii??
Let me enlighten you with some more sources:
http://pokemondb.net/black-white/wild-encounters
^Nope...nothing about shiny chaining in Gen V.
http://bulbapedia.bulbagarden.net/wiki/Chaining
^Hmm..I didnt see anything about Gen V in this article either.
Here we go:
"The odds of finding a random shiny pokemon are 1 in 8192, but when you use the poke-radar in Platinum/Diamond/Pearl and encounter the same pokemon over and over you create a "chain" and you use PokeApp number 20 to check how many pokemon you have chained so far (if you encounter a different pokemon your chain is broken and you must start over), once your chain gets to 40 the odds of finding a shiny pokemon are maxed (1 in 204).
However there is no Poke-radar in Pokemon Black/White so it is impossible to chain pokemon in them, And encountering the same pokemon over and over has no effect at all if you're not using the poke-radar
so unfortunately Black/White are not good games to look for shinies on."
I think the conclusion here is evident.