>Well, we were quite well-off for some time in Bolivia, WITHOUT the hassles of DST. Starting September 1, we now have DST, too - for the first time in Bolivian history, I believe. Regular Bolivian time is UTC minus 4, we'll now have UTC minus 3 while DST lasts.
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>I checked the Wikipedia article on DST, and there is considerable doubt on whether it actually saves anything. According to some studies, it saves energy, some studies say that actually MORE energy is used (due to increased heating costs), and some say it doesn't make much difference, one way or the other.

I doubt that DST has some real effect now.
Esp. if you take the other problems in account like depressions, sleepless, lost of efficiency at work till your biological clock is set :-)

Maybe this was true when it was first presented, but now...
BTW Russia canceled time change this year.
From now on they will not change to summer and winter time :-)