Bamalucky,
Passive income refers to income streams where income is received on a regular basis, with little effort required to maintain the income stream. Examples of passive income are rental from property, and royalties from patents or license agreements. Passive income streams usually require a lot of effort to set up, but little effort to maintain. Dividend and interest income from owning securities, such as stocks and bonds, are usually referred to as portfolio income, which can be considered a form of passive income.
Some other types of passive income are:
Royalties from writing a book
Royalties from a patent
Earnings from Network Marketing
Earnings from AdSense or other internet advertisement on your websites.
Earnings from a business that does not require direct involvement from the owner (creation of business systems; also referred to as a cash flow muse business)
or offering a service that doesn't require the merchant's intervention. In these cases, PayPal IPN may be used to achieve this.
[edit] References
Definition from Investopedia
Just felt the need to defend myself! :pissed: