I was looking at the history of the hashing power against this whole thing a little more after that last post as well, specifically the early days. Here's the CSV, numbers are in GH/s.
https://blockchain.info/charts/hash-rate?showDataPoints=false&timespan=all&show_header=true&daysAverageString=1&scale=0&format=csv&address=
Here's number of unique addresses as well, in CSV:
https://blockchain.info/charts/n-unique-addresses?showDataPoints=false&timespan=all&show_header=true&daysAverageString=1&scale=0&format=csv&address=
Main reason I'm including that is I think it's interesting to see how the number of addresses climbs at various points as well. Now, this doesn't necessarily indicate that more actual people are coming online since a person can have as many addresses as they like. If the average miner starts using 2 or 3 computers instead of 1, that would also cause both the power and the number of addresses to climb. But I'd still like to see some correlation between power and addresses ideally.
When the thing first comes on, you're getting about .006 GH/s for a really long period of time, through about May of 2009. And right off the bat there's about 100ish addresses, it jumps up and down a little over this point while the power stays the same, but as a whole this seems like a pretty stable period all things considered. It was new, and being developed.
Around May of 2009 it actually drops off some, seems to hover around .003 to .004 for quite a while and the addresses drop to double digits. Would be nice to have an explanation on what happened here, but it isn't readily apparent on the surface. This stays pretty stable until about December of 2009.
In December of 2009, you start to see the power climb a decent bit. The power grows more quickly than the number of addresses, but they both grow. From December 1, 2009 through April 1, 2010 the power climbs from .003 GH/s to .057 GH/s. Number of addresses climbs from 66 to 195.
April 18th and 19th of 2010 the first really big event for addresses happens. For a couple day period you see the addresses jump to a couple of thousand, then drop right back again. Addresses goes 236, 1346, 2286, 234 in this 4 day period. I'm guessing there was a positive mention of this somewhere, but I can't find anything to back this up quite yet. And the spike in power is nowhere near the spike in addresses. That goes .085, .100, .084, .079. Based on the addresses before and after, it seems they didn't pick up
any long term users off of this spike.
July of 2010 is where sparks really start to fly a little, and there's things in the history that explain them to some extent.
From bitcoin's history page:
July 11 Bitcoin v0.3 release mentioned on slashdot
[5], bringing a large influx of new bitcoin users.
July 12 Beginning of a 10x increase in exchange value over a 5 day period, from about $0.008/BTC to $0.08/BTC
July 17
MtGox established
July 18 ArtForz generated his first block after establishing his personal OpenCL GPU hash farm
There's another flurry of addresses for 4 days, much like the April 18th and 19th, but most quickly drop off. It goes 240, 2822, 2122, 6109, 2015, 1683, 548, 549 and is a little unstable for a couple of weeks. By August we're back to a stable number in the 300's to 400's. The jump in power here is just insane though. This was somewhere between .15 and .20 GH/s heading into all of this. Overnight this jumps to 1.5 to 2.0 and just keeps climbing madly. There's actually a 5 GH/s day on 7/16/2010 as well, which is really strange. But whoever is doing that knocks it off quickly. It's hard to see this on the regular hashing graph because today's numbers make all previous numbers look like 0, but you can look at the hash power graph on a log scale, it jumps several orders of magnitude overnight:
https://blockchain.info/charts/hash-rate?timespan=all&showDataPoints=false&daysAverageString=1&show_header=true&scale=1&address=
You can't really explain this jump being due to "new users" - in fact since the power jumped up overnight just as these people were coming on almost all drop back off by August it almost seems like this helped to drive most of them away. The GPU mining is the only thing that makes logical sense, which only a few users are actually capable of (many of them write bitcoin code).
The power slowly climbs and is up to about 10 GH/s by October 1st when public GPU mining is first released (again using bitcoin's own history page), about 50 times more power being thrown at it in the beginning of July. Coincidentally, the number of addresses is still about 300-400 almost until this September 20, 2010. Then it starts climbing some, and the arms race is born. Also coincidentally, bitcoin's history page also indicates that the price started climbing on October 7, 2010. After "several flat months".
October 01 First public OpenCL miner released
October 07 Exchange rate started climbing up from $0.06/BTC after several flat months.
Here's the bitcoin history page, where I pulled some of the "historic" dates from:
https://en.bitcoin.it/wiki/History