I've got some money and I'm wondering if I should rely exlusivly on paid content. I've seen many offers for 5$/article. Or should I use paid content just to supplement my own content, what do you think?
I would invest in unique content: you can submit them to article directories which redistribute your articles > which people use in their sites > which has your link/site attached to them. It creates a good long term effect giving your traffic to your site.
Paying for some content for your website will allow it to get more exposure and more hits. The more content you have for your visitors to read the more time they will spend at your website. It's a good thing. Just make sure and find a skilled, knowledged content writer. They aren't always the cheapest but the content they offer is much better.