Good content providers?

I am new to seo and would like to know if using a content providing service is worth paying for?

does anybody use one?

Are there any good free content providers?

I had 20 domain names gathering dust until recently
four of the sites appear to have potential but I don't want to spend time learning about the different topics that the content weould need to cover.

Finance
Gift ideas
Generators (electrical)
Ringtones

Any suggestions?

Of course it is. In fact in most cases when your SEO fails, it is your content that will save your website/blog.

That is also the reason why content writers, like me exist. In fact I have been writing content for a lot of sites and blogs. Just be careful as there some writers who will just take away your money without giving you good content. I have seen many people who claim that they are writers well in fact they can't even write a complete and coherent paragraph without grammatical errors and concise flow of content.

I cannot put it any bluntly, but I have quite a number of regular customers in another forum

What about free content providers?
Is it just another type of spam for search engines?

Are there any good ones?

What do you think? That there are people out there just waiting to create quality,unique, free content for your site just because they are nice people.......