Many providers have loyal clienT's who see them regularly and wrote a review when they first saw them.  They don't write a R review every time they see them. Others have other interests and don't provide full time. Others leave for the sugar life. Do I need to go on?  However, you're correct about some hobbyists, theydon't like writing reviews for numerous reasons.

All of the other replies are spot on. But as a newbie I think you should continue to write reviews until you get established and get a track record. The more reviews you write, the more providers will be available to you. I would also suggest that you join P411 and ask providers who are members to give you Okays. I don't know about others, but I tend to steer clear of providers without recent reviews. That is, within the last six months. It is just my preference, no science to it, but I definitely would stay away from those with reviews that are a couple of years old. A lot can change in that period of time.

There may be some crossover for but some guys stick to one board they like. A lady may focus her attention on one board for a while then change her focus to another. I've seen providers who hadn't had a review here for months but had several recent reviews on another site.