Yes, lots of damage, but not the kind of damage Bill described.The type of explosion that Bill referenced would have to be due to the levels of energy supplied by an excess amount of flammable gas such as NG being leaked and present, and THEN a spark igniting it.  

We're currently testing Spark Rent...

Do not flip electric light switches on or off, since this can produce a spark.

Well David welcome to BP and thanks for posting your position.You just sparked my interest so I might just check out your program.And I'm partly NA myself got some Cherokee blood in me so it's good to see a native american on here.

They said there must have been a power spike, the spark lighter stopped working.

;) I wanted to spark a general discussion were most people can come to a basic understanding of a concept that is easily known by pros and helpful to a newbie like me.

What you may find interesting, she may not, but she may enjoy being able to read about all of the "newbies" and that may spark her interest on some aspect of real estate that may not have occurred to you.   

I have already sparked owner interest in wrapping them up in a package deal. 

I may have an opportunity to go out to Sparks NV (near Reno)  for other business.

Not trying to beat you up by any means, but take a look at 1507 S Park Street in Sanford.