BTCBitcoin gladly accepted!
Would be nice if you put that into the listing. There is a marketing concept known as touchpoints, which says that a typical person becomes aware of a brand after experiencing a certain number of "touchpoints". So a person might see "bitcoin" for the first time in a Craigslist ad, or it might be their fourth time. Either way ... even that little addition helps to build the Bitcoin brand.
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http://sbinfocanada.about.com/od/marketing/a/brandbuildingsg.htm