"Cut out all these exclamation points. An exclamation point is like laughing at your own joke." - F. Scott Fitzgerald
Exclamation points have been overused to the point of becoming something rather cliche instead of a legitimate punctuation mark. Honestly, nobody needs you to type like this!!! Isn't this just silly?!?!! I hope you feel ridiculous if you do this on a regular basis!!!! Here's a great article about the rise of the exclamation point.
And seriously, people, WHEN YOU TYPE LIKE THIS YOU MAKE A FOOL OF YOURSELF, AND IT SEEMS LIKE YOU'RE SHOUTING EVERYTHING; OR YOU'RE SIMPLY OVER EXUBERANT ABOUT THINGS NOT WORTHY OF SUCH EMPHATIC EXCLAMATION.