Chronological format is most commonly used. It is best format for recent graduates and fresher applicants. The details in such CV are presented in the bullet-ed points and are categorized into different sections. The skills are generally listed after the career objective and before professional experience details as fresher applicant will not have any eye catching experience details to grab the attention of the employer.
To distinguish the good resume writing services from the bad ones you need to find out how they proceed with the task. A good service asks you to fill out an online question. They also set you up for an interview with the writer. This ensures that the writer is aware of all details that must be present in your resume. If a personal interview is not possible they may also provide you with other ways to get in touch with the writer.
Sometimes its a matter of luck if an employer contacts a job seeker for an interview based on this document. Resume websites provide a more detailed look into a job seekers qualifications and accomplishments. When a job seeker has the necessary qualifications and provides an employer with a link to a resume website the employer will be intrigued because the job applicant is utilizing the latest technology and going over and beyond what is required. If the resume website is done right and includes a resume page an about me page (bio) accomplishments page and images (pictures are worth a thousand words) it will greatly increase the job seekers chances of getting an interview.