Paid posts or non-paid posts

That stalwart of paid posting programs PayPerPost has definite rules about the ratio of paid posts to non-paid posts that you are allowed on a blog. The reason for this is fairly obvious; you are not likely to have a great readership if your content is all advertising. Everyone knows that if you buy a magazine or get one of those free papers posted through your door, that there will be a certain amount of advertising - and there should also be a decent amount of content otherwise why would you bother reading it at all?
I have seen blogs that are pure monetisation and NO other content, and I spend less than two seconds working out that there is no value in re-visiting. Other sites have an identifiable amount of advertising, but enough content to keep you returning. In light of this, PayU2Blog have also requested that bloggers do not use their blogs entirley for paid posts offering no content of their own invention.
In my experience readers return to a blog for a number of reasons which include:

• they like the style of writing, the humor or prose used to get a message across
• they find valuable information about a topic in which they are interested
• they 'connect' with the writer

If you are not actively trying to at least one of these things then your blog has little value either as something people would want to visit, or as a platform for advertising revenue.
This is not to say that a blog cannot be 'used' as a service site purely for generating links, but if this is the case, the content should still form part of that strategy and only having paid posts will not satisfy that criteria. I have seen some blogs that are full of widgets such as the Creamaid and the dNeero ones, these can take ages to load and if there are more than two on the homepage, there is every chance that a reader will immediately browse away rather then wait for the widgets to load.
Please note that PayU2Blog have stopped short of imposing any rules on this, but they have indicated that these 100% paid posts blogs are likely to get very few opportunities in the future.