poloniex.com worked great for me...
best website to buy moneroj?
hi, what is the most secure website to buy moneroj?
PS: you should put a list on homepage of trusted websites that already are accepting moneroj to trade.
I recommend shapeshift.io for small amounts if you already have BTC. If you don't then maybe AltQuick
I second the PS. Would be useful with a list of current exchanges on getmonero.org (under Getting Started).