Quality Back link is one of them.

I'd suggest Stop Forum Spam implementation. That should help a lot. Fighting spam has always been an issue, but SFS helps.

Check this thread: https://www.webmasterworld.com/google/4931890-2-30.htm Something is going on.

It is 7:30 am and I have already received 7 hits from Google which means it has already been an above average day. It is strange.

I have noticed small spike in traffic for my health related product review website since January 2nd, however, nothing on such a scale ^ Does the traffic flow continue to...

I think it does but not directly. Consider how your on-page metrics impact organic rankings. If the paid traffic boosts your time on site and pages per session while lowe...

Good point. And I'm doing like this as you say.

First links you acquire for a new site are likely to be from submissions, comments, profiles pages and social networks, as I do not expect new site having great content f...

Yes, like this.

Thank you, @seoradar for your beautiful suggest.