Well, the guys that brought us the "Bart Simpson" chart pattern maybe are some kind of "Federal Reserve"
While this is an old image, the pattern was very much used between 6000 and 7000 and also somewhat between 3000 and 4000.
Obviously, the reason are short-term traders. But they have the same effect than as if was a "FED" - they've stabilized the price a bit. So encouraging short-term trading techniques (including arbitrage and short-term short selling) seems a viable strategy to stabilize the Bitcoin price and make it more useful "as a currency"
(I'm still working on the
idea I linked before. Maybe this year I can code a prototype. However, it seems this year is to become bullish, so it wouldn't get massive acceptance, but at the end of a bull phase stabilization mechanisms will get more demand (as people become increasingly fearful)
)