GeekGold Exchange Rate
Current Exchange Rate
GeekGold has an intrinsic monetary worth. After ongoing GeekGold inflation, the current rate of exchange is about 40 GG per US$ (2015).
Calculating the Exchange Rate
The value of GeekGold is measurable to some extent, because in the GeekAuctions people buy GeekGold with real money and with real games that have an actual material value. Based on such data from GeekAuctions, it is possible to guesstimate the rate of exchange between GeekGold and the US dollar, and to track how this has changed over the years. However, the estimated exchange rates below have for the most part not taken into account GeekGold exchanged for items, which would likely make the value of GeekGold higher than what is shown.
Exchange Rate from 2005-2015
The real-world value of GeekGold has steadily decreased over time, and this trend is expected to continue (though not as quickly as in the past), mostly because of the finite possibilities for spending it. These values are based on direct cash for GG auctions. Note that originally the vast majority of GG auctions were for games, whereas now the vast majority of such auctions are for cash. (As explained below, arguably the best option for exchanging GeekGold for games is The GeekGold for Game Lotteries where you can attempt to win games, gift certificates and more with GG.)
2005: ~6GG per US$
2006: ~7GG per US$
2007: ~7.5GG per US$
2008: ~10GG per US$
2010: ~15GG per US$
2011: ~25GG per US$
2012: ~31GG per US$
2013: ~36GG per US$
2014: ~39GG per US$
2015: ~41GG per US$
Note that prior to 2010 the data used is very limited and based on a small sample size, and only a rough approximation is possible, rather than an accurate value. Also note that the above exchange rate have for the most part not taken into account the relative value of GeekGold for items, but are mostly based on geekgold auctions for direct cash. As a result, the figures above are at best a rough and subjective guesstimate, rather than an exact value.
Since 2005, the value of GeekGold has deflated significantly, so that 1US$ is presently considered the approximate equivalent of almost 41GG. Examples are available of what you could purchase with GeekGold from 2005-2007 (see here and here and here). For more historical data about the changing value of GeekGold, see the original content of this wiki article as it appeared in 2006, the excellent article by Simon Hunt from 2007, and the thread by Tom Rosen from 2007. This more recent summary from 2010 traces the declining value of GeekGold over time. In 2014 and 2015, GeekAuctions for US$10 have often sold for 400GG-500GG.
One significant catalyst for this inflation was the 150GG supporter bonus of 153.15GG that was distributed to all paying BGG supporters at the end of 2010 in connection with the 2010 end-of-year support drive, as first discussed in this thread started by John Peterson. While the rate of exchange was 15GG per US$ at the end of 2010, by early 2011 it was already typical for amounts of US$10 to sell for 250GG in the GeekAuctions. The influx of GG created by these supporter drives and its effect on the value of GeekGold has continued in subsequent years, with a further 143.30GG supporter bonus distributed at the end of 2011 in connection with the 2011 end-of-year support drive, which witnessed an immediate increase in the GeekGold paid for money auctions. By early 2012, most GeekAuctions for US$10 were selling for 300GG or more, some even as high as 500GG or more, a trend which has continued in later years. Subsequent supporter bonuses awarded were 160.00GG at the end of 2012, 207.36GG at the end of 2013, and 219.82GG at the end of 2014. After a further influx of the largest supporter bonus of GeekGold yet (387.81GG) at the end of 2015, several GeekAuctions for US$10 sold for 600-1000GG in January 2016, which corresponds to over 60-100GG per US$.
Another contributing factor is the improved technology (e.g. phones, cameras, tablets, videos) available to the average user, making it easier to submit photos and videos in return for GeekGold. Prior to 2005, most users did not own such technology, meaning that the only way to earn GG was by writing articles, making it much harder to accumulate GeekGold.
With GeekGold steadily being introduced into the economy, there have been many discussions about the need for further ways to spend GeekGold, and to create "GeekGold sinks" that reduce the impact of this devaluation of GeekGold. See for example this thread (December 2010) and this thread (January 2013). With an steadily increasing user-base earning GeekGold, and with long time users often accumulating large amounts of GeekGold over time, more and more GeekGold is being injected into the economy without new ways to spend it, so invariably its value gets diluted.
Games for GeekGold (G4GG)
The GeekGold for Game lotteries have been running since October 2009, and use a bid-based lottery system which participants enter by paying GeekGold. Since participating in these lotteries offers no guaranteed return, they give no reliable indication of the value of GeekGold. However, in many cases an auctioneer earns well over the going rate for GeekGold, while in other much less. Typically the value of the item is not as relevant as to the popularity of the item, the best auctions which earn the most GeekGold often have both value and popularity.
These lotteries also contribute to the ongoing devaluation of GeekGold. By reviewing previous G4GG listings and GeekGold auctions, it is evident that sometimes there is a direct correlation of a person earning GeekGold in one and selling it in the other.