equilibrium

Feedbacks on any blog will be possible only if the blog's owner has allowed it. If at all the blog owner wants the readers to only read the blog and not share their views ,then he/she can can disable the comments/feedback option. If this is the case in the blog that you are referring, then you will not be able to write feedbacks. If not, just write in your feedbacks in the Feedback column and then press enter. It may be approved immediately and you can see it online or the owner may approve it if he/she approves your feedback.

No, it is not correct to say "feedbacks." The correct word is "feedback" whether you are referring to a single piece of feedback or multiple points of feedback.

They will improve through Employee and Customer Feedbacks

they are positive feedback and increase activity negative feedback.