do own dilligence (zt)

1 if you are DT, you have keep eye on lateste News:
www.marketwatch.com
this is almost close to real time (for free)and you can choose and watch some 20 stocks (interesting) in real time.

2 every evening you have to spend 30 minutes to 2 hours to check
http://online.wsj.com/mdc/public/page/2_3021-activamex-actives.html
in particular, in this website you need take a look at the following
Nasdaq Most Active Stocks NYSE | Amex
NYSE Amex Biggest Percentage Gainers | NYSE | NASDAQ
Unfortunately, it is not real time, that is why I suggest your checking this at night. If you have time, you can check it at 8:00am (PT) so that you can find big shot and loser.

Always focus on stock with more than 500k volume. Too small volume stock will trap you. (you can buy , but it is very hard to sell)

DT is not good for everyone, I am not DT but a full-time employee at engineering firms.