metamask空投规则建议： 必须要有空投，因为metamask的发展需要广大用户支持，要回馈用户。空投要照顾到大多数用户的利益，希望根据用户使用的次数和贡献的费用来空投，这样比较合理。

Suggestions for metamask airdrop rules: There must be an airdrop, because the development of metamask requires the support of a large number of users, and it is necessary to give back to users. Airdrops should take care of the interests of most users, and hope that airdrops can be made based on the number of times users use them and the cost of their contributions. This is more reasonable.