The quote is correct and I am correct: "arbitrage /ˈɑrbɨtrɑːʒ/ is the practice of taking advantage of a price difference between two or more markets" - that is exactly happening. You are trying to redefine the word. I won't draw this out any longer. If you think that taking advantage of a price difference between BF and BTCT isn't arbitrage, reread the definition given. It will sink it.
Cheers.
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You aren't. The advantage comes in to play buy purchasing in one and selling in the other. what advantage is there to buying more shares but each share is worth less and not being able to take advantage of the increased price at the other exchange? You have to take advantage of a price difference in two or more markets, but in what you are doing you don't even involve the other market, you just buy in one market and the other isn't involved. BF and BTCT are completely isolated as far as markets go.
From Investopedia:
Definition of 'Arbitrage' The simultaneous purchase and sale of an asset in order to profit from a difference in the price. It is a trade that profits by exploiting price differences of identical or similar financial instruments, on different markets or in different forms. Arbitrage exists as a result of market inefficiencies; it provides a mechanism to ensure prices do not deviate substantially from fair value for long periods of time.
ar·bi·trage (ärb-träzh)
n.
The purchase of securities on one market for immediate resale on another market in order to profit from a price discrepancy.
intr.v. ar·bi·traged, ar·bi·trag·ing, ar·bi·trag·es
To be involved in arbitrage.
[Middle English, arbitration, from Old French, from arbitrer, to judge, from Latin arbitrr, to give judgment; see arbitrate.]
arbitrage [ˈɑːbɪˌtrɑːʒ ˈɑːbɪtrɪdʒ]
n
(Economics, Accounting & Finance / Banking & Finance) Finance
a. the purchase of currencies, securities, or commodities in one market for immediate resale in others in order to profit from unequal prices
b. (as modifier) arbitrage operations
[from French, from arbitrer to arbitrate]
arbitrageur [ˌɑːbɪtræˈʒɜː] n
ar•bi•trage (ˈɑr bɪˌtrɑʒ)
n., v. -traged, -trag•ing. n.
1. the simultaneous sale of a security or commodity in different markets to profit from unequal prices.
v.i.
2. to engage in arbitrage.
[1470–80; < Middle French,
arbitragethe business of buying and selling securities, curreneies, and commodities on an international scale so as to take advantage of differences in rates of exchange and prices. — arbitrager, arbitrageur, n.
See also: Money
No one claims the definition you do. You are taking the wikipedia statement out of context and making up your own definition.