How can blogging competition help SEO?

[MartinHof]

I am starting a blogging competition for my website visitors. How can I use this to help SEO to my site?

[Thommas]

A competition like this, t can provide you with content for your site/blog and links. It can also give your products/brand more exposure.

[EGOL]

I don't know how it will help your site... but the spammers will know how to use it to help their sites.

This will attract spammers like bugs to a Georgia porch light.

[ChrisDyson]

Blogging contests will only be successful if they are promoted well, have good prizes and have very rigid and well defined rules. As Tom mentioned you'll get extra content for your site but you need to maximise the number of links you will receive too.

For Example: If you are an e-commerce website you could invite bloggers to imagine they have $500 and for them to write a blog post on their site about the products they'd buy with this money and many will link to the products. The prize could then be the $500?

You want to make sure that if the blogger is going to write a guest article for your site that they also write an article on their blog promoting the blogging competition.

You can give out extra prizes based on social measures such as the article that gets the most  FB shares, +1's or Tweets that the article receives.