# Rating and ranking system

**What’s a company’s rating?**

A company’s rating is determined by the ratings given in the reviews of a company. The resulting rating is an average of ratings of all reviews but with a small twist.

Each user review also has a weight value. The higher it is, the more a particular review impacts the overall rating. For instance, a review that rates a certain company as 3 and has a weight of 2 will impact the overall rating the same way as two reviews that rate a company as 3 and have a weight of 1.

**What impacts the review weight**

- Author experience on Revain. High-level authors have reviews with more weight. By default author's weight is 1. Starting from level 6, each of your reviews has a default weight of 2, at level 8 that becomes 3, and at level 10 - 4.
- Review age. The older the review, the higher the chance that it’s outdated. The weight of a review that’s older than a month is multiplied by 0.8. If the review is 3+ months old, its weight is multiplied by 0.5, and, in the case of reviews that were left more than a year ago, the coefficient is 0.2.
- Review popularity. For each like, the weight of a review is increased by 1 %. Same goes for dislikes. Please note that only likes/dislikes of verified users count.

**What’s a company’s rank**

Rank is a company’s index number among all companies in its respective category. If you choose any of Revain categories, you’ll see that all projects are in an ordered list.

Each company has its score. Score is a parameter assigned to each company that reflects the level of interest of users. The higher the score - the higher a company will appear in the companies’ overall ranking.

**How it is calculated**

Base score is calculated according to the following formula: CompanyRating * (lg(Number Of Reviews) + 0.01)

It’s multiplied by 1.2 if the company has a verified business account that responds to the reviews.

It’s also increased by 1% for each verified follower that a company has. For instance, a company with 10 verified followers will get its score multiplied by 1.10. and a company with 20 followers - by 1.20

Rating and ranking systems work the same way across all categories (projects, exchanges, wallets, cards, games).

So, if you think a company deserves to be higher on the list, follow it and write a review. Maybe even reach out to them so that they create an account on Revain to be able to communicate with their audience by responding to reviews.