Information adapted from The Naked Roommate.
If you decide to rush, do not take the process too personally. These people don't know you and have no way of knowing you so quickly. Look at it like this—they should be more concerned about impressing you. They need new members.
Is the organization officially recognized by the school?
Is there a Greek advisor?
Has the organization been on probation (or is it currently on probation)?
What's the average GPA of organization members?
How much will it cost?
What's the time commitment?
Is this the right fit?