Avoid being vague If you have references include them. Dont say available upon request. If you have gaps in employment explain them clearly. They will probably come up in the interview anyways. Being prepared in advance by giving complete information in your resume is better than being caught off guard in the interview or worse skipped over all together.
No contact address is available. If the service does not have a physical location they may not be a suitable option for you. The chances are they are more into mass production of average documents. Numerous resume mills employ non-skilled individuals overseas to create these documents. They get hold of your current resume embellish it with the information available from the questionnaire and place it in a standard format.
An attractive resume template/outline makes it more powerful. Just as dressing smartly helps a candidate in an interview good formatting does the same for a resume. Looks do matter at all places in the real world and on paper. When you present yourself well you get noticed. Similarly when you present a good resume it will be noticed; otherwise it would be very easily find a bin to rest in.
The next thing you need to do to get a searchable job-winning resume is to incorporate keywords. Resume services can help you best weave keywords throughout your overall piece. Otherwise you can match up keywords from the job ad and integrate them into your resume. Using a core competencies section in your resume writing where you list out keyword phrases is also a good idea.
In-all a good template makes the resume stand out from the crowd a raw template made before-hand saves your time when you need to make some quick changes or wish to make the resume target a specific job opportunity and is appealing. So in a world where looks have the power to hide the content why not take the benefit?