Small discovery, 小发现 xiǎo fāxiàn

If you spend a lot of time conference calling on Skype like I do right now, but sometimes you feel you want to turn off your microphone to sneeze, burp, eat something or maybe just sing for a while, this is the right post for you. In the conference breaks I am able to do some work for my own...

1) Skype has a nice advanced feature to help you put in a short-cut to mute the microphone at any moment.

Tools -> Options -> Advanced Feature (not difficult)

2) Sometimes, after you enable and start using this function you really forget if the mic is on or off. Unfortunately, Skype doesn't come with a build in Always On Top function so you can always check the status of your conference.
Luckily, I ran into a small freeware software that allows you to make any window Always On Top, minimize them to tray, put them as a floating icon on a desktop or changing widows transparency settings.

The name of this nifty software is: DM2, and more information can be found HERE.