What questions should I ask before hiring a LinkedIn profile optimization service?

It is essential to know what the *LinkedIn profile optimization* package would contain before buying one.
Some questions that you might like to ask before finalizing your choice could be:
1.Do they have experience in optimizing profiles in your particular industry?
2.Is the profile optimized for your career goals?
3.Is the profile optimized for recruiter searches?
4.Do they provide any revisions in case of need?
5.Can they provide you with any samples and references from their clients?
Answers to these questions will give you an idea of what to expect from the service and help to make sure it is right for you.