[tyingq]

Some country tlds are risky because they don't necessarily check residency requirements when you purchase, but might later if your domain catches their attention. Not all have residency requirements, but some do.

There's also some TLDs that are well known for web spam, phishing, or email spam, sometimes because of free or cheap subdomains. Those might have issues getting indexed in Google, or issues with SMTP delivery. Google once deindexed the entirety of *.co.cc, for example.