•    From an analytics perspective, what is different between a user from organic search results vs. a type-in user?
•    you distinguish the results of your search optimization work from a seasonal change in traffic patterns?
•    What is Phrase Based Indexing and Retrieval and what roles does it play?
•    What is Alexa ranking?
•    What is Latent Semantic Analysis (LSI Indexing)?
•    What do you think of using XML sitemaps?
•    What is rss?
•    What is pad file?
•    Use of bookmarking sites
•    Define viral marketing
•    What technologies are you familiar with? (We primarily use HTML, CSS, ASP, .net, PHP, SQL, and JavaScript)
•    Do you have experience in extensive competitive analysis and what techniques do you use?
•    Do you have experience in bid management tools, API tools, and click fraud issues?
•    Do you have experience in email marketing, banner advertising, other types of media buys and other forms of online advertising?
•    Are you familiar with A/B testing and multivariate testing?
•    Are you familiar with enterprise web analytics and what packages are your familiar with?
•    Are you familiar with any blackhat SEO techniques, search arbitrage, and affiliate marketing?
•    What are your thoughts on the direction of Web 2.0 technologies with regards to SEO?
•    Do you have experience in copywriting and can you provide some writing samples?
•    Have you attended any search related conferences