That's what I prefer.  There's also this one: BTC

I kinda like Ƀ

There is no identical unicode symbol. The Thai Baht is the closest however and The Silk Road (the largest Bitcoin marketplace) uses it.

The US Dollar came out of the same evolution:

"The [$] sign is first attested in British, American, Canadian, Mexican and other Spanish American business correspondence in the 1770s, referring to the Spanish American peso,[1][2] also known as "Spanish dollar" or "piece of eight" in British North America, which provided the model for the currency that the United States later adopted in 1785 and the larger coins of the new Spanish American republics such as the Mexican peso, Peruvian eight-real and Bolivian eight-sol coins.

The best documented explanation reveals that the sign evolved out of the Spanish and Spanish American scribal abbreviation "ps" for pesos. A study of late eighteenth- and early nineteenth-century manuscripts shows that the s gradually came to be written over the p developing a close equivalent to the "$" mark.[3][4][5][6][7]"

- http://en.wikipedia.org/wiki/Dollar_sign

Um, no, I changed it to the symbol every major Bitcoin website uses - including bitcoin.org, bitcoincharts, and these forums - at least in their favicon: B⃦
This is the standard Unicode symbol used for the B with double vertical strokes.

The forum has BTC using some CSS (embedded fonts) to workaround the fact that major fonts don't render it as nice, but it is the same symbol.

You must be confusing Bitcoin with Silk Road.

My vote is for the Thai Baht. It's clean, elegant and standard.

Not a fan of ฿.

More a fan of Ƀ.

http://www.ecogex.com/bitcoin/

This looks pretty dumb. Is it a Bbox ?

A font entry for 0x20E6

Explain to me how Chrome 22.0.1229.79 m is not a working browser?