In regards to the questions posed, I would offer the following....
1. Have you purchased any golf products based on MyGolfSpy reviews?
I have purchased Srixon balls, Sketchers Go Golf shoes, and component heads/shafts/grips based on product reviews/discussions.
2. How has MyGolfSpy changed the way you think about golf equipment?
For sure! Not only is there information provided by staff articles, but you can open up a forum thread and get feedback from other players. After decades of living with 'off the shelf' gear, the site opened up a world of fitting and customization that I had not been aware of for 'weekend warriors'. Many long time golfers assume others are aware of these things, but not everyone has the advantage of local club builders/fitters or even knowledgeable retail staff who can properly fit you. Yes, it actually does make a world of difference!
3. Have these purchases lowered your scores? (List which products and how much they have lowered your scores.)
I have indeed lowered my scores. I consistently broke 90 this summer with a low gross of 85. This is a drop of 7-8 shots a round over last year. A change of ball (to Q-Star), and working on properly sized clubs (shorter shafted driver and putter) led to more distance AND accuracy off the tee, and fewer 3 putts.
4. How have these purchases helped you enjoy the game more? How?
Obviously lower scores help to make the game more enjoyable. Just as important however is hitting more QUALITY shots per round. Hitting greens on approach shots that you missed previously for example because your tee shots are 20 yards closer. Making more quality chips and pitches because your balls now spin and check, instead of of releasing too much is another example. Feeling like your equipment and your skills have BOTH improved such that you look forward to playing, and have the expectation of a posting decent score.