Greg Alexander There have been fake and misleading websites related to Thailand's e-Visa and entry registration systems.
A few things to know:
The official Thai e-Visa website is operated by the Ministry of Foreign Affairs:�
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Thailand's Digital Arrival Card (TDAC) is a different system from the e-Visa. The official TDAC website is:�
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and registration is free. Thai Immigration has specifically warned about unofficial sites charging fees for TDAC registration. 
Common scam or misleading practices include:
Charging large "processing" or "service" fees for a free government form.
Using domains that look official but are .com, .info, or similar rather than official Thai government domains.
Paying for ads so they appear above the official site in search results.
Collecting passport and personal information through unofficial portals. Thai authorities have warned that such data could be misused. 
How to verify a Thai visa site
For e-Visa, use thaievisa.go.th.
For TDAC, use tdac.immigration.go.th.
Be cautious if a site claims to be "independent", "partner", or "document assistance service".
Be suspicious if a supposedly government-required form asks for unnecessary extra fees.
If you have a specific website URL you're unsure about, send me the link and I'll help check whether it's official, a legitimate third-party service, or potentially a scam.