I rely on technical s from technical traders that are willing to share their opinions with me. I am not a good trader, I have to rely on others for that, but, I will give you what I know. Bitcoin shot through that area without retesting the resistance which traders want to see, so they interpret that area as a key level to revisit. I am not saying I know where Bitcoin is going to go ..... I am saying that is where I have my dry powder saved up for waiting to buy in. The volume today is not high enough today when it went down to 7,500 imo to indicate a potential bottom.
My trading strategy would be to wait for 4900 ..... possibly buy some. If you look at the charts ... 4900 is the next resistance level ... not rocket science once you have been following knowledgeable traders.