It looks as if we are about to break out this BIG triangle (thx to Frozenlock for pointing it out to me). Its either going up if we go above 150$ or back to 100$ if we break below 136$. As you can see the current little triangle is just part of the bigger one that formed after the bubble burst. The actual count of waves is controversial, as this could either be interpreted as an ascending waves series (1-5) or retracting waves (A-C or A-E). Anyway, Elliot waves aside, the chart lines provide the best indication which way we are heading IMO. If its down, 100 will provide a good resistance that will be hard to crack for technical and psychological reasons. Double digits may shortly be visited but are unlikely to drag through the winter.
It seems you are just arbitrarily drawing that purple line. What made you connect 170 to our 149 vs some other level? How do you know that the resistance in our current rally isn't actually another sub-line, like the thin green line, and then the purple line would be an additional stronger resistance above that?
one can be sceptical about TA in general, or just the quality of TA on this forum, but one should at least know the basics before condeming someone's aproach (not so much aimed at you, but notme's flippant remark below)
anyway, spekulatius can correct me here, but it looks like he drew the support/resistance lines through the extrema of the candles. in this type of TA the belief is that, the more "points of contact" you have, the higher is the validity of that trend line.
zooming in, with a bit of good will (he used a pretty thick line
) the purple line has 5 points of contact, which would be rather good.
disclaimer: I'm not the biggest fan of TA based on candle extrma, but I'm not completely dismissing it either.
EDIT: re: your question why there isn't another line above or below. Some people using a similar TA do exactly that: drawing parallel lines below and above the main trendline, assuming that if the trend line is broken, the next parallel will be the "next level of support/resistance"