PaypaI is a phishing scam, which targets account holders of the widely used internet payment service, PayPal, taking advantage of the fact that a capital "i" may be difficult to distinguish from a lower-case "L" in some computer fonts. This is a form of a homograph attack.
The scam involves sending PayPal account holders a notification email claiming that PayPal has "temporarily suspended" their account. Instead of linking to PayPal.com, the site references in the email link to a convincing duplicate of the site at paypai.com, in the hope that the user will enter their PayPal login details, which the owner of paypai.com can then store and use.