I belong to a site called TradingChief, daytraders, swing traders, position traders, long term, short term, all sorts of different people who play the stock market use this site. I mainly use intraday charts on my buys and sells. With NOT and its volatility i never try and buy the botoms or sell the tops on my trades. I like to take a little bite out of the middle trying not to be greedy, as greed often gets you in the poor house. I usually buy in 2 different lots, my core position then my trader lot. With my trader lot, I trade in and out trying to bring down the cost of my core position. Just a strategy i use called CCPS . It works for me, others have different strategies.
Buy and hold works for some, just couldn't stand to sit and watch as a stock I own tanks. This market just formed a major top and is getting ready to go through a major correction. Button down the hatches people.