AdosQuebec.de.vu, now defunct, was one of the first website that I created as a personal project back in 2005 at age 15, this is when I started to learn PHP and mySQL.
AdosQuébec was a francophone social network for teenagers and young adults living in the province of Quebec. It achieved great success for the few months it stayed online. From the latest web archives I could access, there was 1334 members and as far as I can remember, many were active.
Unfortunately I had to close this website as the free plans of the web hosting company I was using were discontinued and at that age I could not afford anything better.