How should a resistor value be put on a pcb?

[tooki]

It doesn't use a smilie, for the Ohm sign, but Latex.  I don't know why the kerning is off. Interestingly it's betterin the quote, than the orignal posted. When I use the unicode symbol, Ω it's fine though.

The embedded LaTeX gets rendered to a bitmap image, which is then just inserted inline, hence the wonky spacing. (It's not kerning, by the way — that word specifically/exclusively means the manually tweaked horizontal spacing between specific letter pairs. Manually in the sense that the font developer embedded manually tweaked kerning tables into the font.)