Hear hear. There was a big discussion in a London radio station a week or so ago about that, since David Cameron wants to fight for equal pay across genders and have companies over 250 or so people publicise the pay gap across genders. Which by itself sounds a laudable thing but really unrealistic for many trades, and in particular software development. The demand is high, supply is low, and you can have people with less experience than yourself making more because they negotiated better. That has nothing to do with genders as you say - its all down to negotiation skills.