Respecting Your Time
Clients need to respect your time. If you have an appointment and a prospective client leaves you waiting for 20 minutes, you should know that this behavior probably won't change once they become a client. Since they're not organized, you'll be losing important productive time.
Are They Pleasant?
If they're constantly late, annoying, or abusive, you may just need to go ahead and say no. If they treat their employees poorly, they'll probably treat you poorly as well. Always consider everything, but remember that constant annoyance isn't likely worth what they're paying you.
Interviews are a two-way street. They are interviewing you as you interview them. Make sure that you both know exactly what you're getting into. If you're unsure about a prospective client, a trial run project can be a great way to decide whether you are willing to commit to a long-term relationship with the business.
Find out more about prospective client red flags by reading the entire article (link above).
Added by Computer Consulting Kit