to answer your question yes i do manage my own portfolio.

i use my metatrader for technical analysis, it charts are my source of information as opposed to the traditional news services. plus meta trader has a get feature of setting alarms and bells to notify me if something has turned the way i expect it to.

i am not a day trader, but i check the selected company stocks which i am targeting in a particular market on the daily bases, and look for the movement and opportunities in the particular market segment or a particular stock in a market section. And then make a decision whether to jump in or dump it. its simple plus if you add more than two or three information sources or adviser's it gets all confusing to make a decision.

i believe in keeping it simple.