Kim Kardashian is the highest-paid celebrity Twitter user in the world, according to a recent survey.
The reality TV star is believed to earn around $10,000 (£6,250) per post on the micro-blogging service.
Kardashian was named top of a poll compiled by Ad.ly, an online service that allows celebrities and public figures the chance to "monetise" their tweets.
The 29-year-old socialite arranges endorsement deals through the company, which she then posts on to her 2.7 million followers.
She told Us Weekly: "I tweet about products, places, foods and fashion that I love."
Other celebrities currently using the online marketing service include Soulja Boy and Audrina Patridge.
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It has been revealed that Kim Kardashian gets paid $10,000 a tweet by Twitter advertisers, who use her account to promote their products to her over two million followers. Many are now asking if she is worth it.
On Kim Kardashian's Twitter account, in tweets such as the one below:
http://twitpic.com/ulofd - Heading 2 the gym! Got my @Reebok EasyTones on! LOVE THESE! Go get 'em at @Dickssportcmo
Source: twitter.com
Kim Kardashian promotes products and where other people can buy them.
She reportedly has a contract with Ad.ly, an online advertising company, and they have a few other clients as well, such as Lauren Conrad and Dr. Drew. But Kim is their highest earner and most popular.
Kim Kardashian does not get paid for every tweet, but for every tweet promoting a product she does.
It is thought some of Kardashian's advertisers include Reebok EasyTone and Carl's Jr, the fast food chain.
Source: dailymail.co.uk
So any mention of the above and she gets paid.
Ad.ly said they limit the advertizing tweets to one per day so as not to annoy her followers.
She has also just signed on with Carl's Jr to appear in a rather risky ad campaign using sex to sell salads.
This has prompted many Twitter user to question this whole thing. If you are getting paid to advertiser and Tweet you need to have a label letting people know it is a sponsored Tweet.