Many people use a blog to market products, I see marketing as an effort to
carry my products to the market. Therefore a blog can be a way to carry the
message or advertisements to the market.
I recommend you become the Guru of the market, a Guru should be trusted and
RSS feeds should send people to pages where they can order, to read a post
offline make a sales conversion difficult.
I see people shameless promoting their services in the text ofa blog,
and going off topic so they can pitch their products or services.
Write about a topic that is of interest to a reader, then hope they click on
a product at the side columns, do not just intersperse small ads through the
blog comments, this appears slimy. I recommend you keep the ads out of the text
of the blog, and autonomous. The blog is to attract the target market, the sales
pitch is a separate function and not really a blog post.
Attract the target market with the blog, then pitch in the surrounding areas,
not so direct and more polite.