Something interesting just happened to me.
I received an e-mail from the wikigallery.org with compliments about my blog and an offer.
They would put a link to my blog on their site in exchange for me to link back to them from my blog.
I knew the site already and had nothing against it at the beginning.
As it turned out later, they put the link to my blog even on 3 sites. On page 31 on all of them, but that was OK with me, as I'm not interested in promoting my blog aggressively right now.
But what I needed to link back to was not OK with me. It was a site selling painted copies of old paintings.
I'd rather see people buying art by contemporary artists. So they don't need to paint copies of artworks of past centuries to survive.
So I said NO to more exposure for my blog for a price, that wasn't OK with me. :)