My workflow, which how most professionals do as how i understand it.

1. Shoot subject, multiple times, different settings/angles/etc. important ones, or underexposed/overexposed/not in ideal environment ones i shoot in raw.
2. Go back, insert memory card to pc. run lightroom
3. import everything. One catalog per camera (my NEX3, Pen EE2S, Fuji X100, all different catalog)
4. go through every image, the ones that i want/need, i press 5 for 5 stars. additionally, ones that i wanna upload to facebook, i flag it as blue. useful because once you upload the images in albums, copy the download link so you can link it everywhere on the net (like use the img tag in lowyat, for instance)
5. filter the non 5 star images, delete them permanently. No point saving gazillion semi-good or almost good images... that's why you gotta practice taking as much as you possibly can. Rule of thumb: take all possible perfect images during the shoot and save editing time.
6. Develop the image
7. do the sharpening at the final stage. since lightroom's editing workflow doesn't destroy the image, it's unnecessary to make a copy - unless you wanna make multiple, different editing styles of the same image lah. Either use the sharpen slider, or your own plugins, like Nik's Software for instance.
7. Select the blue-flagged ones, make a new album if needed, upload to facebook. you can make it private if the images in the album are only for posting in lowyat or internet, for instance.