Cool! I made an effort to study Cantonese about 10 years ago and wish I'd come across these sites!

At the time, I heavily relied on another great Cantonese dictionary/resource site: http://www.cantonese.sheik.co.uk/dictionary/

In addition to the Jyutping Cantonese pronunciation, it also shows corresponding Hanyu pinyin pronunciation for Mandarin. There are also number of learning resources on the site. I love how you can mouseover any character to get a pop up to learn more about the character - it's meaning as a single character, pronunciation, etc.