In the sense that some of them are journalists gathering info and probably some of them are police gathering intel.
Aside from writing a story about this site I'm not sure what a journalist could get from here that goes much beyond "a bloke I met in the pub said ...". Which is probably not going to pass muster with the average subeditor.
And again, I am not totally convinced that the police are sufficiently short of work that they would be scanning here to find which ladies may be selling ass or which parlours are offering a hand job.
Now if, independantly of here, the neighbours weigh in ... or someone bangs the immigration / traffiking drum ... different story.
I mean, I don't know anything for sure, but I don't see a lot of cause for concern about journos and coppers signing up here.