I am getting the message in my Google Webmasters tool account for a site that it is having mobile usability issues. It is saying that my site is not optimized for mobile devices. What should I do?

Are there any free or paid keyword research tools present from which the Search Engine rankings can be checked??

If I use paid advertisements to get traffic to my blog the. Is it possible that Google Adsense will lower there CPC for that traffic?

Skyscraper technique can build unique content using the loopholes of the previously posted content. But its hard as it needs extensive research in the topic to succeed. If you are doing it then are you hiring anyone and/or team to do it. Or you guts do it yourself. I am little bit confused right now, I want to build unique content in a competitive niche so should I hire someone?

How effective it will be if I use video files in my day to day emails that I send to my subscribers? Or, just it will be a bad idea.

Now in the age of Semantic Search. How much it is important to mention the original keyword which is relevant for the content? I mean any page can get ranked if the contextual meaning is same for the original keyword.

Can anybody provide me information about the best link audit tool which are of affordable prices and easy to use.

seo off page techniques 2015

Suppose, I started a topic and after all type of replies are made then should I close it? or, rather should I keep it alive to see how members would react to that information. What are your preferences.

What are effective ways to generate leads and have sales from social media sites?