What they do all day? Many business owners with great products have no idea how to get them out there. Enter the marketing consultant. Companies hire them to set up a plan that generates the right kind of buzz to attract the right kind of customers.

How to get the job? A flair for creative promotion runs side by side with a head for analyzing customer data. Expertise in the latest marketing technologies -- web ads, SEO and Google Adwords -- is also key. And most importantly: A savvy consultant needs to be well-versed across a wide range of industries to understand different clients' needs.

What makes it great? That wide range of expertise is what makes the job so exciting. Unlike an in-house marketer, a consultant isn't tied to one field. A variety of knowhow creates more opportunities for new accounts.

What's the catch? Hustle is mandatory. Whether one works independently or for a consultancy, there is no such thing as job security, and regular income is never a sure bet. --Tom Ziegler