Isaac Gube has some recommendations on how to improve your photography skills in DIY fashion:

There's an interesting thread over at MicrostockGroup regarding how to leave your royalties to your loved ones after you die. Not something you have probably thought about very often! The short form is that your beneficiaries will have to provide relevant legal paperwork to the agencies in order for the accounts to be transferred to them, so if you have a will, make sure to explicitly include the copyrights to your images in it.

A friend at Pixmac sent me this release to post: "Pixmac, one of the world’s fastest growing microstock agencies partners with Fotolia and Dreamstime and offers an image collection of over 7 million royalty free stock images and illustrations from a single site and the ability to purchase images instantly without registration at the lowest prices..."

I've written a short introductory article for eHow entitled "How to Make Money With Your Digital Camera (Selling Microstock)" -- take a look here. It is a short overview and I'm interested in any feedback you may have -- either to improve this article or for ideas for future articles you may be interested in.

Excerpt:

MacWorld has seven tips for would-be microstockers (see below). It's always helpful to read other people's summaries of the things that they find important. This is a decent list of basics.

1. Understand how it works: "...Selling stock photos is not easy money. It will take time to build up a decent sized portfolio (at least 100 pictures) before you see any sizable return..."
2. Think like a designer: "...Designers want photographs with ample amounts of uncluttered negative space so make sure you leave room for a headline or other text..." [Click the title above for more]

Shutterstock and Dreamstime allow you to sell images on an editorial license, meaning that purchasers will only be able to use the images in editorial formats (e.g. magazines, newspapers, etc). This is useful for images that you have taken which are of specific interest (famous people, places, current events...) and may not have model or property releases.

This sample editorial image from my collection was taken on the day of George W. Bush's inauguration and depicts items that might not normally have passed as royalty-free for various reasons. It is usable as editorial imagery because of the public nature of the event and the public interest in the event.

Dreamstime offers an editorial license in addition to their other licenses:

Dreamstime offers four extended licenses which could increase your earnings significantly: Increase Max Copies, Web Usage, Print Usage, and Sell the Rights. Each of these extends the ways in which the image can be used and pays a much higher premium. If you sell the rights to the image, you no longer control it and cannot sell it elsewhere, so use it with caution--noting that you can make a large chunk of change using this option (you can set your own price). Further details are below.

Sell Your Digital Images: Dreamstime pays $0.50 to $1.00 per basic download to the photographer (50%) and has a pretty good upload system. 

Buy Digital Images:
Dreamstime charges more for photos that have been download 100 times or
more, and again if they’ve been downloaded 500 times or more. They have also recently implemented a system where print and web images are separate purchases. You can currently download images for less than $1.