>With today's machines, the difference may be negligible, specially when we're talking about service objects which may not be accessed from tight loops.
>
>And when they are, getting an object reference to it into a variable, then using that variable inside the loop, will run the access method only once. IOW, instead of
>
>

for i=1 to 10000
>    oApp.oServiceObject.DoSomething()
>endfor

>which would fire the access method each time, we can do
>

loService=oApp.oServiceObject
>for i=1 to 10000
>    loService.DoSomething()
>endfor

I do the same, but I prefer to add intellisense to the code like this:

LOCAL loService AS MyServiceClass OF Application_Services.VCX
loService = oApp.oServiceObject
for i = 1 to 10000
    loService.DoSomething()
endfor

This helped me a lot to prevent typo's in the code.