A: Community Average Rolls are a way of "crowdsourcing" what the best roll is on each weapon. By scouring the global Destiny population using the Bungie API, we are able to see which perks a wide variety of players select for each weapon. Those stats are presented as the Community Average Roll.

A: As part of this feature, we are now tracking all active players using the Bungie API, not just those who have signed in on light.gg. The statistics displayed here are based on all players that have logged in over the past 2 weeks.

A: Yes and no. Every player should be seen by our scraper. The process will compute stats on items seen in the vault / inventory of players who have granted access to their "non-equipped Inventory". However, the default Bungie.net permissions only allow us to see the full details on weapons that are equipped by each player's characters.

A: Partially. Presumably if someone has the weapon equipped, they like it, which would mean that the perks equipped on it are perceived to be better. At the same time, most people are probably dismantling rolls that they think are bad, so even if we could see their whole inventory, we might not catch many "dud" rolls. Overall, the phenomenon of (mostly) only being able to see equipped rolls will reduce the overall number of rolls on less popular weapons, but the perks on those that are visible will likely trend toward being more popular, otherwise people wouldn't keep the roll, let alone equip it.

A: The bars for each percentage are relative to the most popular perk in that column. The most popular perk will fill its bar, and each perk under that will illustrate how popular it is relative to the most popular. So, if 22% of rolls use the most popular perk in a column and 11% of rolls use the least popular perk, the bar on the least popular perk should appear to be roughly half full. The intent of displaying it this way is to create better contrast between the options.

A: The usage stats are based only on randomly-rolled, legendary weapons.

A: Ranks range from F- to S+, based on how "far" your roll is from the community average roll. A roll with the least popular perk in each column should be ranked F-, and a roll with the most popular perk in each column should be ranked S+.

A: The best way for everyone to help make this tool more accurate / complete is to update your Bungie.net privacy settings to allow API tools to view your non-equipped inventory. The more people that allow full access to their inventory, the more weapons we'll be able to detect, and the more comprehensive the statistics that fall out of that will be.