Because freelancers may not always give continuous service, it is important to choose a freelancer that not only fits inside the structure of your organisation but also adds value through their expertise.  After 14 years in SEO, I've established a track record of generating exceptional and long-term results, for some of the UK's largest businesses. Also, retainers bother me, therefore I prefer to work on an hourly basis. Retainers frequently favour agencies and do not necessarily represent the job performed, so I opt for a fairer, more flexible payment structure.