I've written articles in the past about color management–you know, ICC profiles, calibration, metamerism, blah blah blah–but the world keeps changing around us. In general, things change for the better, which is great, but as a photographer looking to display images on the web, there are always things to watch out for.
I found a great article on the burgeoning “Gear Oracle” site about web browser color management, which breaks down the effects of displaying images with different color spaces in different browsers.
It's not all great news, but it's important to know how things work so that you can mitigate any potential problems. Color management is basically a briar patch no matter how attentive and diligent you are, and trust me, I know this from close personal experience printing photographic reproductions for five years.
Read Web browser color management guide via Gear Oracle