The stats from W3S just arrived, and show an impressive 4.8% Linux market share.
I know I know, we can't trust that this is accurate, but none the less, this means that within a relatively large segment (web development), Linux has managed to grow.
I'm impressed that Linux is holding on to the gains of previous years, especially considering the generally positive response to Windows 7, and a stronger than ever alternative from Apple.
Linux market share is growing in a growing market. Total number of Internet users is now 1.8 billion. http://www.internetworldstats.com/stats.htm
Even if we estimate Linux as low as 1% that's 18 million users, and that's not counting servers, clusters, render pools etc.
This is great news IMO.