Prices are low and the BTC economy is growing, so "BUY more Bitcoin" is much better advice. Go against the crowd (especially near extreme points) and you will eventually make great profits.
If you're thinking trading and / or short term, then watching these moves if understandable.
If you're thinking longer term and believe the increasing acknowledgements of bitcoin are not just marketing / hyperbole.
Here are some relevant quotes ripped from 2bitidiots column.
Amex CEO Kenneth Chenault said: “The protocol of bitcoin is going to be important.”
Richest man in the world, Bill Gates: “Bitcoin is better than currency.”
Virgin Founder and CEO, Richard Branson: “I have invested in bitcoin because I believe in its potential, the capacity it has to transform global payments is very exciting.”
Former Citigroup CEO, Vikram Pandit: “The reason I like the concept of virtual currency is because it’s spawning a lot of innovation and thinking about how you transfer money around the world, how you store money, all those kinds of things.”
Jamie Dimon’s lieutenant and global head and managing director at JPMorgan’s transactions services unit, Paul Camp, who joined Circle this week even after his boss mused, “The question isn’t whether we accept it, [but rather] do we even participate in people who facilitate Bitcoin?”
eBay President John Donahue: “I think there are two sides of it, the investment side and the digital currency side,” he continued in the interview, which aired Thursday. “I’m more interested in the digital currency side about how you and I can exchange value seamlessly using technology.”
PayPal mafia member Reid Hoffman: “I think it’s an incredible system that’s created a ledger that is across — a distributed ledger across the whole world for it can be money but it can also be other things.”