I think that google is interested in Bitcoin, but I don't think they are going to adopt it or even make their own version.
Google is all about centralization, Bitcoin is all about decentralization.
If Google made their own currency I think it would be more akin to Facebook credits.
Interesting point about the centralization/decentralization.
About the decimal discussion:
The total number of bitcoins is programmed to approach 21 million over time. The money supply is programmed to grow as a geometric series every 210,000 blocks (roughly every 4 years); by 2013 half of the total supply will be generated, and by 2017, 3/4 will be generated. To ensure sufficient granularity of the money supply, bitcoins are divisible down to eight decimal places (a total of 2.1 × 1015 or 2.1 quadrillion units).
If we take the numbers from this
article and assume every human being on the planet has a need to hold an average of a 1000 units of currency and combine this with let's say ten billion humans in the near future I think we have nothing to worry about. (2.1*10^15 / 10*10^9 = 2.1*10^5; 21000 units per person)
What is not included in this calculation are other entities that hold currency such as companies. Any ideas on this?