[wildwood]

This is a percentage chart, which only shows that mobile traffic is eating into desktops' _share_ of the total traffic.

This chart says nothing about whether mobile is eating into the absolute traffic that desktops are getting. More likely mobile traffic is increasing a lot, and desktop is holding steady.

[integraton]

Correct. A cursory glance at the data used for that graph http://stats.wikimedia.org/archive/squid_reports shows that desktop traffic has actually increased significantly in that time period (+ 25ish% for both windows and mac). For example:

Feb 2012: http://stats.wikimedia.org/archive/squid_reports/2012-02/Squ...

Feb 2013: http://stats.wikimedia.org/archive/squid_reports/2013-02/Squ...

[peloton]

FWIW, I have first party analytics data on a top 50 online site and this was the trend we saw too. Can't remember if there were any meaningful trends in time spent though (meaning, if desktop was losing to mobile on a time spent basis).