I believe it's only Featurepics and Shutterstock at this point. Can anyone back me up on that?

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RF = Royalty Free Item
The term Royalty Free (RF) is used to describe the unrestrictive license of Stock Media. Available as a single file asset (i.e. a photographic image, footage, or audio clip); or as part of a thematic collection of assets on a CD, this short-form media can be used limitlessly, with few restrictions, for many projects or campaigns, and with out any additional licensing fees or royalties. Once purchased a Royalty Free licensed item may be used many times for many projects without paying any additional fee.

RM = Rights-Managed
Rights-managed products are licensed on a use-by-use basis. The fee for using the product is calculated from several factors including size, placement, duration of use and geographic distribution.

Editorial Use
Editorial rights are licensed on a use-by-use basis. Use in an "editorial" manner means use relating to events that are newsworthy or of public interest. Newsworthy publications, academic curricula, research papers, personal/educational publications etc.

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Yuri has recently posted a nice abbreviations list on his blog recently:

Basic Stock Photography Terminology - for Photographers | Yuri Arcurs

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Can someone be Micro and Macro with the same images?

Yes, but if it's RF at any site or has ever been sold RF anywhere at any time, it's RF for life!

You can't sell the same images RF on one site and RM on another.

Subject to debate, some people sell the same images on a midstock site for (example) $100 and also have them on multiple Micro sites for $3 and up. If I was a buyer and paid $100 for an image and months later found it for Three Bucks, I'd be seriously pissed off, feel ripped off, and never buy from that artist again.

Example: You buy a USB cable at a popular electronics chain for $29, then you walk into a Wallmart and find the same item, or comparable for $3.98, what would you think?

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