Bonus credits typically have the word "bonus" in them. Examples include referral bonuses, signup bonus, forum posting bonus, FC Survey Disqualification bonus, and so on. Everything else else without the word "bonus" attached (including Paid to Click, Daily Cash Emails, Paid Videos, & FC Surveys) count as "non-bonus" credits. It may seem complicated, but your credit listing will indicate which ones are bonuses with a green "cross" icon (
), and your account balance includes a breakdown of the bonus / non-bonus components.