Basically,
it's when you pick out the parts you like of a culture and just use them as a lifestyle, with no real impact/stigma/social history of injustice towards a minority group attached to your endorsement.
Recent examples have been foreign "inspired" fashion trends, non-English word tattoos, non-"western" religious practices and art, and festivities. A lot of people were calling out a group of predominantly white teens for improperly celebrating the Hindu festival of Holi (without religious basis... http://isumatv.tumblr.com/post/28997624796/so-lets-talk-about-holi-for-one-thing-i-didnt ).
More basic definitions:
From Wiki: http://en.wikipedia.org/wiki/Cultural_appropriation
DISREGARD THE SECTION ON "In Favor Of", as it's not from a reputable source by ANY means.
"A common sort of cultural appropriation is the adoption of the iconography of another culture. Examples include sports teams using Native American tribal names, wearing jewelry with religious symbols such as the cross without any belief, appropriating other culture's history such as tattoos of Polynesian tribal iconography, Chinese characters, or Celtic bands worn by people who have no interest in, or understanding of their original cultural significance. When these artifacts are regarded as objects that merely "look cool", or when they are mass produced cheaply as consumer kitsch, people who venerate and wish to preserve their indigenous cultural traditions may be offended"
TL;DR, a lot of times it comes down to selling a culture as a hobby, fashion, or commodity to be interesting to well, white people (I know I'm not all innocent here either).
Examples from trends in the recent past:
Buddhism (early 2000s Buddha beads trend, Buddha statues, Tibetan items)
Zen (ying yang used improperly, "feng shui" term thrown around improperly, meditation gardens)
Multiple Asian traditions (whitewashed Asian fashion shoots, items, images of geisha/samurai/etc as pop-culture stereotype/icon)
Indian traditions and religions (trend of henna tattoos for fun, bindi spots, belly dancing with no connection to actual practices)
"Black" culture (the fact that hip hop's buying audience is almost 90% suburban white kids and white execs, white rappers, slang and gang signs used by teens)
Arab and Islamic culture (wearing the hijab/chador/burka without understanding its meanings and useage)
Native North/South American traditions (hipsters wearing highly-treasured and important native headdresses, dream catchers as for sale, Aztec/other "style" patterns, "spirit animals" as trendy)
Africa's varied cultures (in trendy clothing prints, art removed from context)
This is not to say that traditionally-white cultures are not appropriated. They are, but there are fewer instances of them being so exotified, more merely admired.
And that's just to name a few. This 30 min. documentary from 2000 also explains a lot, though sadly it seems it's still just as bad today.
http://vimeo.com/3846269
What are your views on cultural appropriation? Have you ever practiced it in any form, wittingly or unwittingly?
If you have, what is your take on it?
I know in the past I have followed some culture-derivative trends (take those damn Buddha beads in the early 2000s) but now I am far more conscious and upset by it when I encounter it.
If someone has commodifed/borrowed/appropriated your own culture/traditions, how has it made you feel as an actual member of the group?