There was a rumour on zerohedge today that the reason bitcoin bounced back up from $5600 was some big hedge funds deciding that this was the time to buy bitcoin. See
http://www.zerohedge.com/news/2017-11-13/mysterious-bitcoin-dip-buyer-identifiedWhile this big money moves in (perhaps stung that they missed out the $1000 - $7000 rise this year), bitcoin's price is supported.
What happens next depends on whether bitcoin's rivals can gain usage for their coins.
Agreed. Institutional investors always means more support for bitcoin at every level and less chance that a flash crash is going to happen. On the flip side, rises are going to come a lot quicker with the new money flowing in as well.
If it does crash below $3000 i would take that opportunity to buy in as much as i can, or at least as much as i can afford - i've sold way too low and now i'm suffering from the consequences. Crashing below $3k just means that people are panic selling and it's good to go against the crowd sentiment in these sorts of scenarios.