hi5 (RIP) was originally a dating site and Pivoted to a Social Network.
Most profiles fake? I can say for sure that's not true. I maintained Postgres/Memcache/Graph DBs and the write load was real.
That said hi5 did engage in address book scraping and other dark patterns that you'd rather not see these days.
Fun fact: hi5 had a featured photos/profiles section based on popularity. Folks that ended up there deleted their account by 5x or more due to the unwanted attention their 'popular' photos garnered....
Glad you got the site back up!
Johan Bové, Sep 24 2020 on social.johanbove.info