It also seems that these people do not have a firm enough grounding in electronics to actually build the circuits they are asking question about...

Take the Wakar example...

Started out as an interesting question on how to output wave files using PCM or PWM..
but was reduced painfully to how to build a clock ...and showed that there was no way he could have achieved the initial aim.

Then "Usman" who accuses Ijaz of sending fake schematics,because he cannot understand the information provided..

To Craig..
I think that you should create a half way house on the member aspect.. If you made it so that only members can create new threads ,but anyone can reply...that would have stopped Wakar from cloning others identities