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	Make sure that every profile you create portrays the same person — specifically, someone who's respectable, professional, and high achieving.

Be consistent from site to site. Too often recruiters and hiring managers get mixed messages about job candidates based on their online profiles. For example, you might have a LinkedIn profile that portrays you as a driven go-getter with an excellent sales background, but your MySpace profile suggests you are someone who lives the life of an ’80s rock star. Make sure that every profile you create portrays the same person -- specifically, someone who’s respectable, professional, and high achieving.

Master a brief sound bite. When looking at your profile, hiring managers and recruiters want to learn more about you. The ''About Me'' section of your profile, then, offers the perfect opportunity to briefly describe your work history, strengths, and notable achievements. This paragraph should be similar to a thirty-second elevator speech you may have already prepared about yourself.

Develop a network. Some people prefer massive networks that consist of hundreds of strangers from around the globe. Others prefer a small network that only includes people whom they’ve befriended, are related to, or have worked with. Crompton and Sautter suggest developing a network of between 50 to 150 contacts through each site.

Showcase your skills through links. You should include links to your personal blog, webfolio, or website if they are relevant to your career. If you don’t have any of these things, consider including links to any projects or work you might have been involved in that can be viewed online.

Strategically use keywords in the ''Tags'' section. Similar to using keywords in a resume, this strategy allows you to list words that help other people in your network or search engines find you. These words can include your areas of expertise, job titles, industries, hobbies, and anything else that defines you as a professional.

Post a scandalous photo. You know what I’m talking about: It’s the photo of you showing off your hot, bronzed body in a barely-there bikini. It’s the portrait of you -- in all your glory -- bonging a beer while sporting a Bears jersey at last week’s tailgate. Profile pictures like these may be amusing and help you score a ton of friend requests, but they certainly won’t impress your employer.

View or update your profile on company time. You can’t help it. You just have to accept a friend request as soon as you receive it. You have to know who has added pictures to their profile in the past hour. And as soon as you realize wakeboarding tops your list of interests, you have to immediately change your profile to reflect this. You jokingly refer to it as your Facebook addiction, but it’s no laughing matter to your employer. Instead, it’s considered a ''waste of company time'' if you’re scoping out these websites while at work.

Post information that conflicts with your employer’s values. Remember that any thing you wouldn’t want to share with your supervisor or co-workers is better left off your profile. This information may include how you spend your leisure time, how you feel about sensitive issues, or any personal experiences you may have had. Also, be cautious about things your friends post on your profile that may portray you in a negative light.

Reveal why you’re a lousy employee. Ever taken a sick day to hit the beach rather than nurse a cold? Or maybe you were supposed to work from home one afternoon, but your profile suggests you slept in and spent the afternoon catching up on your soaps. Believe it or not, some people actually make this information public on their profiles! Whether you reveal this kind of information in your profile status or a friend has left a comment ratting you out, be aware that if others can see it, so can an employer.

Vent about your employer, boss, or job. Many social networking sites allow people to include their work history. Posting unnecessary, negative information about a particular aspect of a job, such as ''Job sucks, but it pays the bills,'' gives an employer all the reasons they need to slap you with a pink slip.

Remember that any thing you wouldn't want to share with your supervisor or co-workers is better left off your profile.