In order to sell stuff on 2L you are going to need two things. One, you are going top need a niche product and two, you are going to need a herd of people that need what you have to offer. The easiest and most popular thing to sell on the Internet is specific information. Creating information products and selling it is the cheapest and easiest way to make a profit. The beauty of selling an information product is that you can write a report, ebook or even have a blog that is connected in some way to Second Life and make money. The real beauty of this is that in order to create an info product, all you really need is time and some specific information that a certain niche would need.
There are all sorts of strategies that you can use to make money with this niche. You could simple write an ebook that is automatically down loadable for a considerable amount of money. That way if you sell only one copy, you have made money on your time. Another strategy would be to promote affiliate products (either on 2L or off) that have links to affiliate products or services that you can make a commission on. if you use a program like Adobe Acrobat, you can have active links in your ebook that link to your other sites. You can give these ebooks away with the right of the reader to make more copies and distribute the ebook to whoever they want. Just make sure that you don't allow them to change the book !!! If they change the links, you will kill your viral marketing efforts.
You can also go outside the realm of Second Life and sell information products through the mail. People really love getting stuff in the regular mail that they can actually get their hands on. You could very easily promote your information product on 2L and sell it online so that it is delivered through the regular mail. The advantage of selling hard copy information products is two fold. For one thing, you can have incredible mark ups for your products ( by the way, you don't have to print them and stick them in to a binder until someone buys them and two you will have all of the clients, or customers information, so you can market to them again and again.
Anyway, I have only scraped the surface of this subject to find out more, keep checking this blog and my other postings.
ELMO aka Marke Solo