My first private tracker was gfxnews half an year ago.It was very difficult to maintain ratio because of the shitty internet in my city at that time.I lost my account once for the low ratio.A couple of months ago registered again and now maintain above 2 ratio.It is my main tracker because of my interest in photography.Since then i became aware of the superiority of private trackers and begun researching them.
edit:I now remember that arenabg was once a private tracker,maybe a year ago, when there was a lot of problems with the trackers in Bulgaria.It was not easy to acquire but then everything calmed down and they opened and began growing.