Common Ground Coffee & Kitchen Hurstville
Westfield Hurstville, 301/3 Cross St, Hurstville NSW 2220, Australia · 655 of 656 reviews · 99.8% coverage · googleReviewsChecker
No strong manipulation signal
Credible-reviewer 1★ rate
5.5%
Outside flagged months
100%
5★ from ≤2-review accts
5.8%
→
The estimate uses the lowest sufficiently sampled credible-reviewer cohort and never raises the displayed average. Manipulation risk does not subtract stars directly.
Why this boost score?
No campaign-like month was detected. The boost classifier is independent and can still flag account-history or timing patterns. Elevated risk begins at 35/100.
| Signal | Observed | Points |
|---|
| 5★ from ≤2-review accounts | 38 reviews (5.8%) | 6.2/30 |
| Reviews on burst days | 0 reviews on 0 days (0%) | 0/35 |
| Peak/median monthly ramp | 3.6× | 0.8/20 |
| Tightest five-minute cluster | 2 reviews | 0/15 |
| Total | | 7/100 |
Reviews per month by star rating
stack height = total reviews · gaps = zero-review months · outlined stacks = non-seasonal campaign-like months
Reviews per day (recent)
shows the 160 most recent active review dates; scoring uses the full dated history · red = burst day (≥8)
Credible reviewers — the quality test
| Reviewer pool | Rating | 1★ rate | ≤3★ share |
|---|
| All reviews | 4.35 | 6.9% | 16% |
| Veteran (≥20) | 4.337 | 6.3% | 15% |
| Veteran (≥50) — estimate basis | 4.303 | 6% | 15.8% |
| Most experienced (≥100) | 4.271 | 6% | 15.8% |
| Local Guides | 4.386 | 5.5% | 14% |
| Credible union (Local Guide or ≥20) | 4.386 | 5.5% | 14% |
| Credible outside campaign-like months | 4.386 | 5.5% | 14% |
Non-seasonal campaign-like months (0)
Each month is compared with the same calendar month in other years; ≥90% 5★ distinguishes positive campaigns from ordinary busy or complaint-heavy months.
| Month | Reviews | Other-year median | YoY ratio | 5★ | Mean |
|---|
| none — no non-seasonal, high-volume, ≥90% 5★ campaign-like months |
Burst days (≥8/day)
| Day | Reviews |
|---|
| none — no burst days |