I actually use my hosts file, and block all the common time wasting sites I like to waste time on. There is no time period - the sites are off limits for the computer, period.
I have another computer in another room for time-wasting - with no restrictions. But sitting there is acknowledging that you're wasting time. You can't fool yourself or anyone else that you're being productive, otherwise you'd be at the 'real' computer.
I find this to be far more effective than a periodic-blocking application. Because anything you can turn off with the click of a mouse, will get turned off just when you need it the most. Editing a hosts file is a major PITA in comparison.
This cannot be turned off with a click of the mouse (see my warning below) :-) — although, one who spent 5 minutes reading the source, could turn it off! But still, not click of the mouse.
And yes, a second time wasting computer would be ideal but ye I don't have one :)
I have another computer in another room for time-wasting - with no restrictions. But sitting there is acknowledging that you're wasting time. You can't fool yourself or anyone else that you're being productive, otherwise you'd be at the 'real' computer.
I find this to be far more effective than a periodic-blocking application. Because anything you can turn off with the click of a mouse, will get turned off just when you need it the most. Editing a hosts file is a major PITA in comparison.