The link you provided (http://www.naturalhandyman.com/iip/inf/infxtra/infcau.shtm)is excellant!
Several months ago I had a handyman caulk my shower. Unfortunately, he applied new caulk over the old. Removing several layers of nasty ol' caulk took quite a while. Instead of a sponge I used disposable wipes. The caulk was clear Polyseamseal for tubs. My shower looks wonderful and it was actually fun doing it.