Use correct monitor calibration or what most people will actually see?

Hi,

I use a correctly calibrated monitor and my images look nice on my screen. But I would like some input regarding what monitor calibration to use when displaying my images on the web. Should I adjust my images with correct curves, levels, etc. when I know that most people don't have the same (correct) monitor calibration as I do? This only concerns displaying images on the web in one form or another. Not printing them. On most computers (friends, at work, etc) I find that the monitors show my photos a touch to bright if they are correctly calibrated.
When you build a website or upload your photos to some site, which calibration do you go by? Do you adjust you photos so that they look good on your screen when the audience (most of them at least)will see them a bit brighter or darker? I seem to constantly struggle with this and of course I would like the photos to display correctly everywhere but that's not possible.

I would be thankful for some input.

Hakan