Any person with information on any topic that someone else desires.
There are several classes of informants, including voluntary informants who provide information willingly, incentivized informants who are motivated by a reward or benefit, coerced informants who provide information under duress or threat, and professional informants who have a career in providing information. Their motives can vary from seeking revenge, personal gain, trying to protect themselves or loved ones, or having a sense of duty to serve justice or expose wrongdoing.
Informants are sometimes paid. Sometimes they just volunteer information. It varies.
The plural form for the noun informant is informants; the plural possessive is informants'.
voluntary informant
It is highly unlikely that a list actually exists. Informants are usually a closely held secret probably known only to the officer they work for and their immediate supervisor. Even a paid informants are not recorded with their true names.
Deep Throat
Yes
Consider Informants
camel ions are kinds of lizards that blend into their informants
Sheesh! Does the word "CONFIDENTIAL" mean anything to you? There are no lists of drug trade informants available for public consumption and these lists are well safeguarded.
Dream on! There is no such website.
You can't, that's why they are known as CONFIDENTIAL informants.