From what i noticed, on the 7th of june the account was close to ranking up to Hero from senior member and the account also applied for help in the ranking up thread, which have been on for long helping those who are 25 merits away from they next ranks and from my expirencce, that thread contributed to the tons of merits perfectbaby received to rank up to Hero member.
That happened to me too, and it is expressly authorized by theymos. Let's see if LoyceV comes by and brings us the quote.
Those who are jealous about that what they have to do is to approach in merit to their next rank, having sufficient activity. At that time, normally merit sources overmerit people to rank up, but if no one notices they can use the threads about it to get the attention of merit sources or people who have a lot of smerits, and have them help them rank up.