The fat red brownish line is the Gann fan trend line from the last swing low (July 2013 at $63) to the last swing high (November 2013 at $1163).
This is the line which - surprise - happened to be the current low at $442. And it's the line where I hope Bitcoin is nearing the bottom of the current downtrend channel which started at $597. Maybe the BTC price stops falling somewhere around $460.
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UPDATE TWO. 4 DAYS LATER (September 9, 2014)
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We are moving in yet another even slower downtrend channel (first from blueish to purple/pink and now to orange/red)
BitcoinGuru
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so 490 is the next top then we fall back down from there maybe to 467 for a little bit then we head upwards?
ChartArt
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seems like we might fall back from 485 and then head upwards
UPDATE TWO. 4 DAYS LATER (September 9, 2014)
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We are moving in yet another even slower downtrend channel (first from blueish to purple/pink and now to orange/red)