I've been using the same rating system for 5 years now. I've avoided points for a number of reasons, mostly because they're not remotely relative between wines, let alone reviewers.
Keep in mind, I can't be bothered to review hohum wines, so nobody sees those, so anything reviewed is a wine worth considering.
Regardless of the value I personally see in them, people like points. So in the interests of giving people a rating they are familiar with I'm going to wack a number on it. I still think you should ignore that number and read the text, as the number will be as reliable as anyone else's number, which is to say, not at all.
P.S. Add 2-3 points, or more, when comparing with Halliday.
Not Rated = 87 and below
Acceptable = 88-89 = Decent Quaffer
Enjoyable = 90-91 = Bronze = I'm looking for a top up
Recommended = 92-93 = Silver = I'd buy it again
Highly Recommended = 94-95 = Gold = I'd buy a case of it
Excellent = 96 = Trophy = Have I secured a supply before publishing the review?
* Tell 'em they're dreamin'
** Possibly overpriced
*** Reasonable value for money
**** Punches above it's weight
***** Serious Bargain
+ Likely to improve with some age
++ Certain to improve with some age
+++ Requires and will reward cellaring
(Each + is perhaps 3-5 years)