I know this is sort of off topic, but duct cleaning is a real thing. I work in the HVACR (air conditioning / refrigeration) business. Now there are scammers in all trades, but if you are worried check the BBB or Angie's list to see. Duct cleaning makes the system more efficient, removes mold and bacteria. Just my $.02 .

FieldPiece has done the with interchangeable heads and wireless too http://www.fieldpiece.com/prod...

Tell your boss this. If a builder were to makes multiple changes, and those changes effected a good wall, he should expect to have "change orders" submitted. That would mean he would be billed for further services. Your original code may have been fine when you wrote it, but when it changes it could effect what was originally written.

What if the phone is turned off , or if the battery was removed ?

I am a self taught typist , had no formal training . With that being said , I wouldn't give up on qwerty . I barley ever use thoose two fingers to type even the I am right handed . I use my left a whole lot more of the time . I don't' many mistakes , and when I do it's usually hitting the key next to the letter I intend to use .

I hate when I forget to log in ;(

I wish I was logged in when I submitted this (

I have an ancient LaserJet 4 HP printer , I will cry when it dies . I had several inkjets and i vow never to go back , I used to buy them and when they ran out of ink go out and get another ($25 for printer or $30 for black ink ?) . I got it from my wifes work with spare toner .