Make sure to have contact information on every page Nothing is worse than having an amazing resume and forgetting to add in contact information. Do not assume that if your resume is two pages that they will stay together either. Put your name and contact info at the top of every page and add in page numbers for a more professional look as well.
Use proper formatting Make sure to avoid excessive white space and to use the space on the page. Avoid using more than one page if possible definitely no more than two. Highlight key points with bullet lists and make sure your paragraphs are clear and concise. Resumes are not the time to be wordy. Be straight to the point.
Tailor the resume to the job description Make sure that every time you apply for a job that you adjust your resume to the particular place you are applying. Read through the job description and make notes of any areas being focused on. Make sure to add information to your resume that highlights your abilities in those areas and makes you more attractive for the particular position you are applying for.
When people apply for positions and send PDFs the employer or recruiter has to open each email download the resume and view it. Since there are many unemployed and underemployed people job hunting there are many job applicants applying for positions and because of the time it takes to view each PDF many applicant resumes may never get seen. When job applicants send a direct link to a resume page its much quicker to view a job applicants resume. If an employer or recruiter likes the resume page they can down the resume right from the resume website site and also view the job applicants complete online profile.
Make your resume original Make sure your resume stands out from the crowd. Dont be afraid of trying something different or breaking from the mold. Sometimes a little creativity can garner enough attention to get your resume read which can make all the difference. Dont overdo it though. Being wacky or silly may be a part of your personality but usually is not a desirable quality in the work place. Photos are usually a bad idea as well. Be creative but keep it simple to avoid drawing attention away from what is really important.