It depends on your network on these website. If you have a good network of friends/followers, you can expect good traffic. Generally social networking sites contain high volume of traffic.
SEO is difficult, but good for targeted traffic. It helps in achieving search engine rankings, which SMO can't. SMO is easy to perform and provides high traffic towards website, but you can't expect much quality(targeted) traffic through SMO.
I know about Google dance. But I want to know that exactly when Google dance happens and how we can stop ranking fluctuation of our website in Google dance.
Here I am sharing some dofollow forums.
http://www.warriorforum.com/
http://forums.digitalpoint.com/
http://www.v7n.com/
http://www.webicy.com/
http://www.webmasterforumsonline.com
Please share if you have any other list
Sometimes we get very good traffic from social bookmarking and social networking sites. I want to know which is the best social bookmarking and networking site that give huge traffic.
From user search point of view, Google instant is good. Because it provide more options to explore and search. From SEO point of view, long tail keywords can be affected with less traffic.
you must search a professional SEO company. search on Google. you will get better options. and if you are looking for freelancers, refine your search with freelance SEOs etc.
don't only consider the traffic and work with both the sources. These sources not only giving traffic but also provide back links. so, try to collect back links and traffic from both the sources
old domains are always better than new domains. Old domain can bring faster results with less efforts. In some cases new domains compete with old domains, because those new domains contain more quality back links than old one
no it is not true. PR depends on the quality of back links. If your blog will have more number of quality back links than your site, then surely your blog will get good PR than website