According to you guys which social networking site is better, Twitter or Linkedin?

Hi, I am looking educational websites for guest posting. I have quality content and want to contribute on exclusive educational websites. If some one having websites or list then share your url or PM me.

I have seen many paid survey affiliate programs over the internet. Does they actually pay?

If I redirect 301 an image to HTML file of mine. Then will it pass the link juice?

Suppose I posted an article and that article get republished in an another blog with my page linking as the source. Then does those links helps ranking??

I saw a domain which is on sale right now of my niche. And I am thinking of buying it, the domain is in parked page. So, is this domain ranking for anything right now?

Which particular column does pays the most for each click in google Adsense? The right or the left.

Will it be a good idea to add a javascript code to my site? Which will determine that if a user's browser resolution if exceeding a definite metrics say 1000 pixels then they will redirected to desktop version my site and if not then to the mobile version of my site.

I found out some solo ads which are very cheap on fiverr? Are they any good? Can I get come conversions out of them?

I want a fair opinion about this thing. According to you guys which type of links really matters in SEO? Is that text link or image links? Which one is more better?