I think that Bitcoin is as big as I think it is - a $2B economy with >10K businesses and hundreds of thousands of users.
Based on data from
http://www.similarweb.com/website/bitcointalk.org, it looks like the forum gets about 1M pageviews per day.
Google:
how do I buy
look at what comes up
You do know that Google search results and autocomplete are targeted? If you look at Bitcoin all day, it will give you Bitcoin-related results... It has little to do with Bitcoin's popularity.
^ this
I though people already knows this
^^ this again because it's important.
That's true only if you allow Google to keep your search history
That's not true either. Even if you don't have it keep your history, it keeps a history based on IP address. Try using a proxy and see how different your results are.
I am sure Google do keep your IP address, but i doubt it effects your search results, as it would not be classed as a reliable method.
An IP address can and does change, and can then be assigned to different people, so any targeted search results would then become un-relevant (which is exactly what google does not want).
Also office/home networks (or similar) will all give the same IP address to google, so again the targeted search would become unreliable.
I do however think that all the people posting here that have "how to buy bitcoin" in their results are seeing the effects of targeted searching.
I carefully block googles tracking cookies (and empty my cookies that i need to accept several times a day) and i am not seeing any bitcoin related results within the first 50 google results.
(+ if you use a proxy, would you still not see the targeted results based on the proxies IP.......)
either way, the alexa results and google trends/suggested terms are showing a fast increase in bitcoin popularity
Best Regards
Ford