Meaning of ありじゃないかなぁ


I was asking if something is possible or not, and received the "ありじゃないかなぁ"
answer below.

I had never heard this expression, is my translation correct?

> Q: 独習×ゲーム的なソーシャルウェブサイトは可能ですか？
>
> A: 聞いてみないとわからないけど、ありじゃないかなぁ。

My translation of the answer: We have to ask to be sure, but I guess it is not
possible.




あり is a slang meaning "be acceptable", "can be dealt with", or "be cool", (or,
more literally, "exists within the acceptable domain"). See [my answer to this
question](https://japanese.stackexchange.com/questions/4642).

As for the question part, you translated the opposite. Here, you have a
negation, but that is used rethorically. Just like the English negative tag
question `isn't it?` implies affirmative, so does the negative question here.

The whole sentence means

> I am not sure without asking to someone, but isn't it acceptable?  
>  I am not sure without asking to someone, but I suppose it is acceptable.

