SOI/DOI = single opt in. when user signs up, you get credited once they click sign up. its opposite of DOI, double opt in, means you get credited once they confirm their email.
single opt in = register. double opt in = register & confirm email
Multi-CPA = never heard of it
CPI = cost per impression. ex user see's your ad = that's an impression = you're billed whatever the bid is.
CPM = cost per mile (cost per 1k impressions).
PPS = pay per sale. you get credited when your lead BUYS something. its opposite of PPL (pay per lead) which means you get credited when user simply signs up.
Revshare = revenue share. you send them a lead who buys a monthly membership package. you get a % of their bill as commission.
Revshare lifetime = you get a % every month/term they rebill.
best for small twitter would be PPL. check out crakrevenue. there's some good threads on bhw regarding adult twitter + crakrevneue traffic = $$$. see link below
https://www.blackhatworld.com/seo/10-to-40-per-day-and-beyond-on-autopilot-no-investment-required.825828/