most people have realised that no one trusts a new poster as journos and locals also try this stunt to get info (in fact more so than cops who TBH have only monitored this site or on one occasion posted to to warn a crew) , and that with zero tolerance in many areas they would have to travel hundreds of miles anyway.
so I expect this site now attracts people who already have partylines if they need them, or who attend legal events, or increasingly just stay in or visit friends and take their drugs there.
Also a lot of people have “grown up” and simply stopped partying (even if they may well still take drugs) about 50% of my mates from when I moved to EA in 2006 have done so.
As for mephedrone, give it a year or so when there are more news reports of people being arrested and charged for mephedrone etc and people won’t be as indiscreet…