If the negative is due to an attempted scam, don't delay for a few months as that could fuck other punters over.
+1
I have 5 or is it 6 reviews to write up but I'm letting a few months pass as i don't wanna be identifiable. And 1 is a negative.
You're right be careful with positive reviews of WGs who you want to see again but unless they work very infrequently/very little (most WGs play down how much they work/how many punters they see), you don't really need to wait a few months to become forgettable, especially since there are numerous things you can do to the review to protect your identity (e.g. changing unimportant details, not mentioning unimportant things like not mentioning subsequent meets in the review and only mentioning them much later etc).
Nonetheless, if you want to be very safe or you like writing very detailed reviews then waiting a few months is probably the best option (only for positives though, not negatives and neutrals).
Why are you worried about being identified from a negative review?
However the reason i don't have many negs is 'cos I'm quite careful... i take time before i choose. Usually
Fair enough.