GMB reviews can be a bit tricky. Yes, they stick, but Google's been cracking down on anything that looks spammy or unnatural. If you're seeing reviews disappear, it's likely they've been flagged by Google's algorithms. Best strategy? Encourage genuine reviews from real customers. Don't try to game the system with fake reviews or you risk penalties. Organic, legit reviews will stick and do wonders for your local SEO and trust factor. Just focus on delivering top-notch service that makes customers want to leave positive feedback.