[youngtaff]

I think Wikipedia removed jQuery due to the impact it had on battery life - see Who Killed My Battery (http://www2012.wwwconference.org/proceedings/proceedings/p41...) for some details.

[oinksoft]

People on comp.lang.javascript (which has its problems, and I've been away for a while) have been noting this for a while. jQuery chews far more cycles than comparable libraries with its function overloading, extra $(this) invocations and such.