Any SEO company would appreciate having rich and valuable content that they can distribute out into the Internet unless they are using spamming techniques. The best t y p e of c o n t e n t is interesting, i n f o r m a t i v e , a n d entertaining to r e a d . Content c an be au di o , p ictu res , video, text, company announcements. In fact, anything that you own and hold copyright to, use for your own purpose.
If you do not supply any content that a SEO company can distribute out, they will have to create content themselves and charge you more or resort to spam type techniques. In short, it is in your interest to provide content because this can act as bait to bringing in visitors back to your website.
It is also in your interest to participate in the online community yourself . Find the top blogs and forums in your market area and make regular contributions yourself. This will give you additional SEO points, as well as bringing potential new business, exchanging ideas and belonging to a thriving community.