just look at the trends and charts for most alt coins; the bubble will pop soon, not the best moment to buy!
no bro, they are not dumping to crash the market they are dumping to buy back cheaper coins, it's normal to have a correction in bitcoin and more so in altcoin
What goes up must go down, and when its down is the time when you should BUY.. not buy at the top. Yes we're in a bubble but its no where near ending, matter of fact the party is just getting started
you don't know most of the time what the top is, otherwise we would all be rich already, my strategy is to buy when there is a continuos increase and to sell when there is a continuos decrease, with this strategy you don't remain off the market, and you have a chance to minimize possible losses