And people in Europe, China, Japan, and Argentina all have charts of the bitcoin price in their own local currency that can look significantly different than U.S. charts in dollars. Fiat currencies do themselves go up and down in value with respect to each other, sometimes dramatically -- as has been the case of EUR vs. USD over the past few months.
So, is the support marked by the USD low at $411 of significance at all to the European or Chinese, who see that same date-point on their charts much differently than we do vis-a-vis current price action? Not at all. This is a far different exercise than finding support levels on charts of domestic stocks, traded exclusively in dollars, or in bi-currency ratios (like EUR/USD).
I would argue: Till someone comes up with a FIAT index -- weighted by all the world currencies participating in the bitcoin marketplace -- and we plot BTC/FIAT to see technical support levels from that chart, then all this pointing to BTC/USD levels is but vain and narrow-minded speculation.
Well you have a point, but I would say that even if everyone were looking at the same chart (BTC/USD), its irrelevant
anyway because the market is so thin that technical analysis doesn't strongly apply. In other words, a single large
sell or buy order is going to move the market, so its more in the hands of fewer players on any given day, and
less in the hands of the collective consciousness of traders who may be looking at S/R levels.