I have two nephews who are currently studying chinese in school. I was thinking about letting them give a try at skritter but because they are still in primary school, they don't know english. would it be possible to make a portuguese - chinese version of skritter? I could contribute with translations for the few words that i know.

let them slowly grow in English and Chinese...

We add languages for which there's a fair amount of demand. We can't create the dictionaries ourselves, so either we need people willing to crowdsource the dictionary, or some free and good quality dictionary we can incorporate into our system. Are there many others who would be interested?

Not sure how similar Portuguese and Spanish actually are, but I guess it would be easier to get people involved to do it in Spanish than Portuguese.

Well.... I just felt like I had to try and ask ... Portuguese and Spanish are indeed similar but to a 7 years old, it sounds really weird to Learn a language based on another language that you really haven't learned yet.

Another solution would be to add pictures to the custom definitions such that they don't have to read, either--they just look at the pictures. We haven't built a default picture set yet, though it's on the list, but you can add them yourself in absence of defining things in Portuguese.

The syntax is:

[img:http://www.example.com/some/image.jpg]

You can put this in a custom definition so that you're prompted with it. You'd have to this on their accounts currently, though.