I thought that people smoke powdered cocaine too (isn't that called "freebasing"?).
yes, you can take powdered coke and 'rock it up' with some baking powder, water, a flame and turn it into freebase... Again, the same checmical, but a more extreme rush experience smoking it rather than snorting it.
I do not suggest anyone try crack, it is an addictive and degenerate drug (leading to a lot of social problems and ultimately leading to homelessness). I have had many terrible experiences with it. The thing which got me to quit, honestly, was repeating the phrase 'Smart people learn from their mistakes, dumb people keep making the same mistake over and over, I am a smart person, I must stop!"
I moved away from those I knew who continued to do it. I lost many friends when I moved away from Los Angeles to Long Beach and at that time I quit cold turkey...
Those who are interested, for intellectual purposes, can visit this site which explains how to 'rock up' cocaine.
http://www.drugs-forum.com/forum/showthread.php?t=34254