hmm I appear to be the only Elements user so far!
Well I don't mind

still got enough to learn about using elements - so not ready for all that power - and besides its around the same cost as a wide angle lens - so provided I shoot in RAW I can always come back later and edit any great landscape shots I get

*note no this does not mean that I have gone for the landscape lens - still on the fence about choosing from that thread

*
Nope, depending on the situation and the needs, Elements is the first one I use for anything involving levels, color correction or resizing. Small and it does what I need. Still have Elements 2 on my Win98 computer.
Irfanview for viewing and quick websize crops, it's doesn't need to be fancy or do anything technical. Auto color correction works on most photos, is really strange on others. Read the important word here. Website photos.
In order of what I'd click first not doing web edits.
Elements - minor adjustments, resizing, converting to TIFF, (unless I do batch processing with Irfanview, which is it's strong point for rename/resizing/file type change, in batches) cropping, quick test prints.
CS3 - major editing beyond the above.
Have Lightroom and learning it for location news edits.
I convert JPGs to TIFF, then edit, so the original photos are never changed. Lightroom does "developing" of RAW so originals are untouched. I choose to never save an edited original photo with the original file name.
IView free
Elements inexpensive
Lightroom slightly more for those who need it
CS3 is magic and worth the expense.
I don't use Gimp, but I should have and saved some money. Works well.
No one mentioned Autopano pro which I think is the neatest toy in the box if you are doing any merged photos or panoramas.