hmm, is it just me or no one cleans the underside of their strings?

I use a microfiber cloth to clean the underside of the strings by sliding the cloth under the strings and sliding it from the bottom fret to the top frets by holding both sides of the cloth. Haha, quite hard to explain in words, sorry if you're confused. =X

And on top of that, I use Dunlop Ultraglide to polish my strings.