Writers who are highly knowledgeable about linking methods with a good standard of english are invited to write new articles about different methods on linking. You may add one link to your site in the article but no spamming. Any articles written are checked for grammer and authenticity meaning this article must be unique and only one submitted - UK One Way Links. For an example on what we require or the type of artcles you may submit take a look at http://www.ukonewaylinks.co.uk/linking_articles.html.
I think the reason is very clear - you get a link to your website. If the article is professionally written then people will read and people will come to your site from ours. That is if the writer has writing credentials as we only accept high quality writen content meaning professional writers with quality websites talking about what they know, theorise, experience etc.