I had a look at my pattern of reviews in the past 3 years:
2014 - 20 reviews (14 positive, 1 neutral, 5 negative)
2015 - 19 reviews (15 positive, 3 neutral, 1 negative)
2016 - 12 reviews (6 positive, 3 neutral, 3 negative)
Now there has been a bit of a drop in my review numbers last year for two reasons. I spent a fair bit of time seeing regulars who I have already reviewed in previous years and had nothing new to add, so the only reviews were girls I was seeing for the first time, and there were not as many new girls as previous years. The other reason is I invested time in SA, and still am.
I will still contribute - and I have a new review coming up - but I can see the quantity of reviews I post becoming lower. Unless I start re-reviewing girls?