Which CPA network should I choose for North American traffic? The traffic is mainly from Canada.

I am little bit confused right now. I am starting a new online business which provides special services for physically disabled people. In order to promote it I want PPC but don't know which network to choose. Any recommendations?

Google is saying that the slow panda roll out is not to confuse webmasters. Give your opinions.

I have a site and I want to sell some of the products which I have already used as an affiliate. Is it wise to build pages from free hosting such wordpress or blogspot, or can I build separate sites with paid hosting to promote and sale my products.

I want to add a contact form in my wordpress blog. Which is the best plugin to do that??

Does the links from various social bookmarking sites helps SEO of a site? Or they don't provide any link juice.

Is it wise to create a separate site for mobile users or it will be better if I optimize my existing site to it? Share your opinions.

I am thinking about starting a forum by the side of blog to help my readers in our niche. Forum promotion is different from blog promotion and it takes time & money both do it right. If I had a budget say about $100 per month then how should I spend it. Considering the fact that I have already hired some people to post topics and discussions.

I have a query that if I want to get signups for my blogs then how can I filter them from random traffic? What is the best possible way to do that?

I see a lot of site owners who uses forums in their niche to get links from their signatures. Are those links really pass any link juice or they have no value?