The question comes up often. many of us are burned by SEO Services, but many have also been rewarded by SEO Services. like all business transaction or purchase you ought to only spend your money once you feel comfortable. Your temperature should pull from various dependencies, like how well does one know this business, how long have you ever been doing business with this person or entity, what's your first impression, how does one personally feel about this person or entity ability to supply this service, and the way well have you ever done your homework.