Suggestions for a presentation on "ways to earn money on the internet"

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Hi to all fellow myloters, I am making a presentation for ways of earning money on the internet. This is meant for computer engineering college students most of whom are like beginners on using the web (google,gmail,facebook at max, thats it). I have outlined some points for the presentation and looking for your valuable suggestions 3 main parts of the presentation 1) Main part consists mainly of 1) ppc programs (like adsense) 2) affiliate marketing (would be citing click-bank ) 3) Freelancing (sites like getafreelancer , elance) 4) buying and selling things (Ebay) 2) Sideways This would consist of ptc sites,survey sites, even mylot which are not so popular ways of earning money on the web. I would mention them but no elobration 3)offbit utility links This would consist of some very useful links, I would interweave them with the main presentation so as to keep the audience's interest intact it would be sites like 1)bugmenot.com (saves you from signup process of every other website) 2)1link.in (shortlink for muliple URLs) 3)guerrillamail.com (temporary email-ids) . . . etc This is the way I am planning, I would like to know about your version, any addition anywhere and yes any good powerpoint template suggestion would be handy too :)