We are not really a pay4vote bot.

We provide a service and upvotes for original content bloggers.

Most of the details can be found here: https://steemit.com/qurator/@qurator/qurator-update-3-some-guidelines-and-tier-related-changes

In short, we will review your account and let you know if you qualify. After registration you will start receiving upvotes from Qurator.

The tiers are there for those who support the project with upvotes or delegation. Higher Tier = Higher upvote.