Say, if a site has too many 301 redirects in it. Then can it cause to loose ranks in the SERP's?

Some of the kw's which lost rankings during the November update are seeing some improvements. If its an update then I will say that the SERP's are improving. Although its too early to state anything.

While operating a PBN in what circumstances you will redirect an entire domain to your money site? Is that even safe?

When I submitted my site's sitemap in WMT it saying 301 redirected for www why is that?

Isn't that going to create problem in the long run?

Anyone can find any domain right, say I myself found a domain yesterday which is 'postchristmaslottery.com'. But how should I know that the domain I discovered is actually worth something in the real world or so? I bet you guys don't just go around buying domains in whichever you guys lays eyes into too, right? You verify the domain whether the domain is worth something or not?!

Which is the simplest way to do that?

How should a company measure social media marketing success?

Some old posts of mine gets pretty decent traffic. Even though they are outdated they still manage to get some hundred views from the search engines daily. Touching them will result in disrupting the good amount of traffic.

But I want to update the information as they are outdated heavily. What should be the approach here?

which off-page activities can provide instant backlinks?

Name the four important meta tags in SEO and what are their character limits?

Its a hypothetical question. If you are attacked by any spammer or a competitor, who is building irrelevant links or spammy links to your site then what will be your strategy to counter it?

I know some guys whose sites were attacked in the same way. So, I am concerned about these things.