We sincerely hope that Twitter doesn't get filled up with lots of marketing campaigns and gimmicks, like the recent campaign by Maggiano Italian restaurants that encouraged users to spread a message in exchanges for the chance of winning a $100 gift card.

That being said, "re-tweeting" is quickly becoming a big part of Twitter. Back in December Edelman's Steve Rubel did the math and found that 2% of all Tweets are Re-tweets. Naturally, PR people are thinking to themselves - how can I get my message to spread through Twitter like wild fire?

The answer? We asked three PR pros for their take. Click continued to read re-tweeting tips from Christine Kirk, Murphy O'Brien Public Relations, Peter Shankman, founder of Help a Reporter Out (HARO) and Jason Brown, Principal, PublicCity PR.

Christine Kirk, Murphy O'Brien Public Relations; Twitter: @luxuryprgal

Best Practices to Get Re-tweeted: Listen to the overall chatter and give your audience or "followers" information they can use. To increase your chances of being Re-tweeted have something interesting to say - typically, people want to pass your Tweet on for one of three reasons: they found it useful, funny, or informative. Also, including a direct link or TinyURL to a story or article in your Tweet legitimizes what you're saying and gives more detail about the topic you're Tweeting about. Specific to PR, the things I post that get Re-Tweeted the most are about media news (hires and lay-offs; launches or the shuttering of publications), and general breaking news within the industries I represent (luxury real estate, travel and food/beverage).

Peter Shankman, founder of Help a Reporter Out (HARO); Twitter: @skydiver

Best Practices to Get Re-tweeted: Say useful things. Information that people can pass on is AWESOME for Re-tweet power, because the people Re-tweeting also get invested in it - they're also passing on interesting information. End result, everyone who Re-tweets looks like a hero.

Jason Brown, Principal, PublicCity PR; Twitter: @PublicCityPR

Best Practices to Get Retweeted: Providing value to followers is the best way to get Re-Tweeted, such as lists, blogs posts, and especially offering something for free. RT'ing is all about endorsing someone, or paying them a compliment, so its important to thank the one who RT'd you.