Whatever unit you decide to adopt, I recommend appending the price in bitcoins in paretheses, perhaps in grey text or a smaller font. If you find this too cluttered you might consider a tool-tip.
For example:
35 µBTC (0.000 035 BTC)
Good point!
Your average person should refer to it as "1 bit"; here's reasoning:
"100 satoshi" -- 6 syllables, sounds foreign to the english speaker.
"1 bit" -- 2 syllables, sounds like a small amount (which "a bit" is considered a small amount in the english language).
"1 microbitcoin" -- 5 syllables (only useful for starting or ending a haiku), and your average person (sadly) has no idea what unit size a "micro" is.
What's the reasoning of using “bits” for 0.000001, rather than 0.00001 or 0.0000001?
Although not perfect, I know this article summed it up pretty well. Basically, the idea is to have 2 digits "past the decimal point"; something that most people are already familiar. So if 1 bit ever becomes worth 1 USD (or even 0.1 bits becomes worth 1 USD), people can work with a currency unit that they are somewhat familiar with. I'm assuming that most currencies use 2 digits after the decimal point for real-world transactions, but I honestly don't know if this is the case. Sounds good
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
Decide for yourself:
http://www.coindesk.com/breaking-down-btc-bit-by-bit/I'm a happy user of "bits", and it's making sense to me to think of exchange rates as "I can get 2,500 bits for $1"