I've added another ACEO to my Etsy shop. "ACEO" is short for "Artist Card Editions/Originals" (or something to that effect) and this small format (art measures 3.5 inches by 2.5 inches) are also known as Artist Trading Cards, or ATCs. This is a standard trading card size.
According to http://www.artist-trading-cards.ch/, the concept of the artist trading card was begun in 1996 in Zurich, Switzerland. The main idea behind the trading card concept is that the cards should be traded between artists, preferably in face-to-face meetings.
So, relabeling these small artworks ACEOs and selling them does, admittedly, go against the original idea.
However, I think a market for ACEOs is justified, for two reasons: First, as a way for artists to potentially obtain some small remuneration for their hard work and creativity, and second, to give everyone an opportunity to contribute to and support the arts by purchasing these artworks, and obtain a wonderful decorative or thought-provoking object in the bargain!
Indeed, this is a very easy and affordable way to collect art. I brief look around Etsy (and other sites as well), reveals a tremendous variety of artistic styles executed in miniature. These small works are easily acquired and can be easily displayed as well. Below is a photo of a recent ACEO I completed, then framed in an attractive, equally affordable frame.
These small works of art can add a nice accent to any number of tight spaces in the typical home: entryways, bathrooms, and so forth. The same artists who are making ACEOs may also be completing large works selling for hundreds or thousands of dollars. These ACEOs may even appreciate in value someday! You never know. In any case, I hope you enjoy these little gems.