quality content + engagement rate, and those who are listed there are not the only one curated , both me and @onealfa.pob do curate those who are not even listed in that list.
base on the quality content and engagement i pick comments of the day.
#pobstreet is not for competition but for everyone but the more you engage the more you get reward.
some time people get reward of over 100pob upvote in a day here in pob street, so the more the engagement the more the reward.
*Note those names listed are comments of the day, others too get curated