I came across an interesting site this evening called Sproost. It is an online furniture and accessory store that lets you shop according to your own personal decor style. The quiz was fun, and it was also very accurate in determining my style. According to my results I am.....
44% Nantucket Style
33% Cottage Chic
23% Rustic Revival
I took the quiz a few times and pretty much came up with the same combination of styles at varying percentages. Give it a try and let me know how accurate your results were.