Yes, but...
If you want a review on the code written on the Nothing language, that would be off-topic since the "code" is ... well, nothing! And this would conflict with this section, on the on-topicness (emphasis mine):
Make sure you include your code in your question
This site is for code reviews, which are hard to do when the code is behind a link somewhere out there on the Internet. If you want a code review, you must post the relevant snippets of code in your question. It is fine to post a "see more" link (though, do be careful — very few reviewers will be willing to click through and read thousands of lines of your code), but the most important parts of the code must be placed directly in the question.
https://codereview.stackexchange.com/help/on-topic
Since it is required to have code to review and the code is nothing, it means that there's no code. Since there's no code, it is off-topic to ask for reviews on a Nothing code.
If you want a review on a compiler/interpreter, then I see nothing wrong.
The Nothing language has a specification. There's a syntax check. The syntax is an empty file. If the program is invalid (a file with something), it has to provide an error message.
That is a direct interpretation from the Bash implementation:
#!/usr/bin/env bash
#
# A 'Nothing' compiler - RoPe Inc 2010.
#
if [[ $# -eq 0 ]]
then
echo "Usage: ./nothing <filename.not>"
exit
fi
if [[ ! -f $1 ]]
then
echo "File not found!"
exit
fi
Code=`cat $1`
if [[ -n $Code ]]
then
echo "Not a valid Nothing source!"
exit
fi
touch ${1%%.*}
chmod +x ${1%%.*}
echo "Compilation successfull!"
Since there's a standard implementation, we can use this code as a baseline for the functionality of the compiler/interpreter.
With that, I see no problem in posting a question about the compiler/interpreter.