How to wean a programmer not to get distracted while working?

1) to Suck him off.
...
3) PROFIT!!!

If he has a job and you catch him looking websites are not related to the job, you just need to make a comment. And best of all asking "Why are you sitting on a Dating site and not working on the assignment?". This is a very inconvenient question. Although every person needs its own approach, of course.
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Personally, I believe that effective working time of the programmer, even less than 6 hours — 5 hours approximately. More — start children's mistakes. Usually when a notice that you can't effectively solve a complex problem at the end of the day, switch to a more simple — it makes no sense to force yourself to focus. More complex I will begin to implement immediately the next day. Keep this in mind.
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Well personally I is such that the work is just "not right". I do not know what is the reason, but sometimes work so hard that it is better to do something more useful than nalyapat mistakes in a day. I usually decide that reading printed materials — will benefit from it very tangible — knowledge enhancement (training). You don't pay the programmer refresher training?
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While sitting at work on Dating sites... I thought it was only for girls :)

Lol. So what? I am also in the working time I like to read Habr and to chat in ICQ. However, this does not prevent me to lead to delight customers the quick execution of the work. Can I use the nose to pick and print the line of source code per minute continually looking at the manual... it is necessary to look at the results, not on time. And pay should try it for the result. Otherwise the turtle will beat you.

track not of time, and results. require a preliminary interim assessment each unit of work and observe its correlation with real time.
to ban something is useless if people do not want to work, it still will not work

No need to wean to not be distracted))) you Need to wean to get distracted. If you pay him money, and ask him for the money. Can not — there are other programmers. There are no irreplaceable people.

>>> A question for the programmers — everyone is doing it or it is just my not want to work?
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I also always do, and that happens all day playing the fool. But when time is running out, can night work to finish.
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In General, a good programmer is a lazy programmer. I have always strained workaholics... will be given for the day of 3000 lines of code, of which 1,500 with bugs, but with a happy smile and a sense of accomplishment to go home, not even bothering to test is made to think on the code.

Tell me what let him go home if planiruem to do all the work for the day, it is better if ~2 cases per day to be able to switch and work on another if the 1st fails.