Currently the FAQ says:

There are certain subjects that, while still being on-topic here, you can get better response on our sister sites:

• Research-level mathematics — Math Overflow

• Research level Algorithm design, complexity theory, etc — Theoretical Computer Science - Stack Exchange

• Algorithm implementation/design, computer simulation and modelling, etc — Stack Overflow

• Statistical analysis — Statistical Analysis - Stack Exchange

I propose that we add a similar item for mathematica.stackexchange.com

Something like:

In the line:

Physics, engineering and financial questions — it is fine to ask the mathematical model and techniques, but concepts of the field would be off-topic.

Physics, engineering and financial questions — it is fine to ask the mathematical model and techniques, but concepts of the field would be off-topic. Physics questions can be asked at Physics - Stack Exchange.

Minor comment: in "Research level Algorithm design" above, it should be a lowercase "a".

• @Kaveh: done. I also added Computational Science scicomp. – Willie Wong Nov 5 '12 at 17:01