1. May I have your existing clients list?
A reputable and reliable SEO consultant should be open to sharing Details of current and past clients and his or her contact information, says Vanessa Fox, author of Marketing in the Age of Google (Wiley, 2012) and founder of Nine by Blue.
These references can help you to evaluate how effective the candidate is, as well as verify that the person did good work on specific SEO campaigns. Clients may not provide specific analytics, but they should be able to at least tell you if they see a positive impact on their search ranking, especially in conversions and in gaining an audience, as a direct result of the consultant's efforts.
2. How will you improve my search engine rankings?
A SEO consultant who won't freely discuss their methods in detail, cautions Rand Fishkin, founder of Moz, a Seattle-based internet marketing software company and co-author of The Art of SEO (O'Reilly, 2012). They should explain the strategies they would use to drive up your website's search engine ranking, as well as estimate how long it could realistically take to achieve the SEO campaign goals you agree on.
Make sure the candidate's proposal includes an initial technical review of your website to weed out any problems that could lower your search engine ranking, including broken links and error pages. Consultants also should provide "on page" optimization, a process to make your website as search engine friendly as possible. It involves improving your website's URL and internal linking structure, along with developing web page titles, headings and tags.
Also, ask consultants if they provide "off page" SEO strategies to raise awareness of your content on other websites often via blogs, social media platforms and press releases.
3. Do you adhere to search engines' webmaster guidelines?
Bing and Yahoo also post webmaster best practices that consultants should confirm they follow.
You want a consultant who strictly abides by Google's publicly posted webmaster best practices, which specifically prohibit 12 common SEO tricks, including automatically generating spam content and adding bogus hidden text and links. If a candidate doesn't follow those guidelines, your website could be relegated to a dismally low search results ranking. Or, worse yet, Google could ban it from search results altogether.
4. Can you guarantee my website will achieve a number-one ranking on Google, Bing and Yahoo?
If the candidate answers yes, warning, "Turn and run in the other direction as fast as you can." Although it's impossible to guarantee a number-one ranking on any search engine, some unethical SEO consultants do make such bogus guarantees.
Consider it a red flag if the candidate claims to have an insider relationship with Google or any other search engine that will get you priority search results rankings. Only Google, Bing and Yahoo can control how high or low websites appear in their search results.
5. Are you experienced at improving local search results?
Appearing in the top local search engine results is especially important to small brick-and-mortar businesses trying to attract nearby customers, Rand says. You'll want a consultant who has expertise in local SEO techniques.
If your website is optimized for what's known as "local SEO," it should appear when someone nearby is searching for keywords that are relevant to your business. To achieve that, a consultant should add your business's city and state to your website's title tags and Meta descriptions, and get your site listed on Bing, Google and Yahoo's local listings, which are online directories of businesses that cater to a specific geographical area.
6. Will you share with me all changes you make to my site?
Search engine optimization will most likely require a number of changes to your existing web page coding. It's important to know exactly what adjustments the consultant plans to make and on how many web pages. If you would like the candidate to get your permission before accessing and altering your website code, be sure to say so.
For example, will consultants add new title tags to your existing HTML code or modify the existing ones? Will they provide additional copywriting content highlighting your products and services to beef up the number of visible, on-page keywords relevant to your potential customers? And do they plan to redesign all or some of your website navigation or add new pages to your site?
7. How do you measure the success of your SEO campaigns?
To gain the success of SEO efforts, you must track exactly how much traffic is being sent to your website and where it is coming from. Consultants should be experienced in using Google Analytics to track improvement in your site's search engine rankings, the number of links from other websites driving traffic to yours, the kinds of keywords searchers use to find your site, and much more.
Be sure to ask how often they plan to share these important analytics with you and how they would use the data to continually improve your search engine rankings and website traffic.
8. How will we communicate and how often?SEO consultants' communication styles and customer service standards vary. You need to find someone whose approach best fits your needs. Ask if the candidate prefers to talk in person or via phone, Skype, texting or email. And find out how often he or she will reach out to you with status updates.
9. What are your fees and payment terms?
You need to know how much you'll be charged, of course, and also whether the consultant gets paid hourly, by retainer or by project. Project-based payments are the most common in the SEO consulting industry, and they can vary widely, depending on a project's size and complexity. Most contract projects ranged between 50,000 and 500000, according to Moz's 2011 pricing survey of more than 600 SEO firms.
The study also found that the most common retainers ranged between Rs.15000.00 to Rs.25000.00 a month on the lower end and Rs 75000.00 to 110000 a month on the higher end, while the most common hourly rates ranged from Rs.1100.00 to 2500. Consultants who specifically serve small businesses often charge less per month and hour.
Other important payment-related questions: How often are invoice payments due -- every 30, 60 or 90 days? Is there any interest charge for late payments?
10. What happens when we part ways?
When your contract expires or if you terminate it early, you should still maintain ownership of all of the optimized web content you paid the consultant to provide.
Accordingly, you'll want to make sure the contract states that when you part ways, consultants will not change or remove any of the content they added, modified or optimized on your behalf. You also should ask consultants whether they charge any fees for early contract termination, and if so, to specify them in the contract.
Note: This information is convinced from different sources,and blogs will assume as reference & informational purpose only.