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Leaders in harm reduction | Dave Purchase Project — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Substance Abuse →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
4bharmredux.org ↗	70 match 1 shared topics	4B HARM REDUCTION SOCIETY	en	substance-abuse WordPress WooCommerce	robotsllmsaihumans	emailphone	full · 12
2-contact.com ↗	69 match 1 shared topics	Assisting Harm Reduction	en	substance-abuse	robotsllmsaihumans	emailphone	none
harmreduction.org ↗	69 match 1 shared topics	National Harm Reduction Coalition	en	substance-abuse WordPress WooCommerce	robotsllmsaihumans	emailphone	none
8thnationalharmreductionconference.com ↗	68 match 1 shared topics	8th National Harm Reduction Conference	en	substance-abuse	robotsllmsaihumans	emailphone	none
virtualharmreduction.com ↗	68 match 1 shared topics	Virtual Harm Reduction - for people who use drugs and those who care about them	en	substance-abuse WordPress	robotsllmsaihumans	emailphone	none
mdbio.com ↗	68 match 1 shared topics	Harm Reduction \| FentanyI test strips \| Life-saving tests	en	substance-abuse WordPress WooCommerce	robotsllmsaihumans	email phone	none
brixol.com ↗	65 match 1 shared topics	BRIXOL.COM domain name for non profit organization \| BrandDo	en	substance-abuse	robotsllmsaihumans	emailphone	none
curingaddictionthefilm.com ↗	65 match 1 shared topics	Narconon \| Drug Rehabilitation \| Drug Education	en	substance-abuse	robotsllmsaihumans	email phone	none
elevateproject.org ↗	65 match 1 shared topics	The Elevate Project	United States~ en	substance-abuse	robotsllmsaihumans	emailphone	none
4-contact.com ↗	64 match 1 shared topics	Reducting Harm: Contact	en	substance-abuse	robotsllmsaihumans	emailphone	none
brisa-project.com ↗	64 match 1 shared topics	BRISA PROJECT	en	substance-abuse WordPress WooCommerce	robotsllmsaihumans	emailphone	partial · 8
2-help.com ↗	64 match 1 shared topics	Help to Reduce Harm	en	substance-abuse	robotsllmsaihumans	emailphone	none
deaddictioninhimachal.com ↗	64 match 1 shared topics	Rehabilitation Centre In Himachal \| De Addiction	en	substance-abuse	robotsllmsaihumans	email phone	none
dararehab.com ↗	64 match 1 shared topics	Drug Rehab Thailand - Alcohol Addiction Treatment \| DARA Thailand	en	substance-abuse WordPress	robotsllmsaihumans	email phone	none
answeringaddiction.com ↗	63 match 1 shared topics	Overcome Addiction \| Answering Addiction	en	substance-abuse Wix	robots llmsaihumans	emailphone	none
4changeproject.org ↗	63 match 1 shared topics	4CHANGEPROJECT, INC	en	substance-abuse	robotsllmsaihumans	emailphone	none
darpfoundation.com ↗	63 match 1 shared topics	Join DARP's Long-Term Recovery Program \| Addiction Recovery in Oklahoma & Arkansas	en	substance-abuse Wix	robots llmsaihumans	emailphone	none
mbharehab.com ↗	63 match 1 shared topics	Home \| MBHA Rehab \| Addiction Treatment in Redlands, CA	United States~ en	substance-abuse	robots llmsaihumans	email phone	partial · 8

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.