PostgreSQL Array Use

Hello,
The project MyJSQLView will provided basic support
for array types in PostgreSQL at the next release.
Information is desired from anyone that uses arrays
in PostgreSQL to effect this support. Just a couple
of questions.

1. What Size, <10 or 100's, 1000's of elements?
2. Single or Multi-Dimensional?
3. What data types?

Any input would be welcome.
Thanks,
danap.