The topic of the relative pros and cons of working as an in-house SEO or being tied to an agency seems to be coming up a lot recently. First there was SEMPO’s In-House SEM Salary Survey and since then (not sure if they are related) came the High Rankings interview on the subject with Danny Sullivan.

As being someone that has worked both sides of the fence, I can see the relative pros and cons of both approaches. Personally I’d say I feel closest to Jill /Whalen’s ending comments – even if you are an experienced in-house SEO it can help to use an outside agency for validation and to pick up the grunt work that you can never get to.