TOO MUCH IS NOT RECOMENDED
If you have an approved website by some adsense you should give that adsense feel comfort in there/you website. The less adsense in your website - business link - the better will be. Otherwise like my blog before - a month ago - is full of adsense, minimum traffics, and bigger Alexa rank. When I knew that the less adsense/business link the better so I have unplug/clean up the adsense with small contribution into my account - give less benefit and money - in order to bulid more benefit adsense left.
ADSENSES IN MY BLOG
PTC links, some adsense link, surfer links, and other not important links I clean-up. So there is smaller quantity of business links in my blog. E.g:
I hope some day will arrive a better adsense to grab and give more money/benefits to me.
I will link you to the best PTC tool website that can incrase possibilities to get downline. Here is the link.
When you want to be a business blog - PTR blog - make sure that you have primary domain blog and authentic in content and interseting - up to date - topic that your posting. The less adsense in one blog - I recomend you to have some blogs (not the free domain blog) - the better. In expanding your income the quantity of your good blog may be needed.
Thanks a lot.