new table or new database?

When should you use a new table in a database as opposed to a completly different database.

I am building an advanced "refer it" script and don't know whether to use a new database or table. Personally, having a dedicated server a new database is easier but are other people limited by the amounts of databases they have and just use a new table in it? or should i make it so you can choose?

If it is for vB then put it in the same database as alot of users (such as myself) will only have one Database in their plan (more cost $$$).

I would use one database as well... actually having anything related to vB all in the same database makes sense and is the best performance wise. I only create a seperate database when I need to for a different product.

-Chris

ok i will put it in the same database to start with and then create a altered version for those not using it with vbulletin.

thanks everyone.