If you don't sharpen your photo you're missing somthing
You reduce the size of your photo for the web so you need to edit it propperly so that the effect of the reduction is minimal.
Image Resizing for the Web and Email
As for time saver... photos i import in lightroom already are getting "capture sharpened" automaticly so it does not cost me any time.
The rest of the sharpening i do is also need for the S version, but since i mostly do fashion it would be a pain with the clothing and moire...
Anyway.... i would be impressed if you can see the differnce in correctly developed photos.
I can even throw the K-01 and the K30 in the mix, might be a fun experiment.
but... that's a discusion for somewhere else i believe, this a photo thread afterall.