I've enjoyed your use of caps for a long time, but you really have TWO flavors of usage. One, as has been noted, is when caps are used in place of either italics or an exclamation point. That's pretty good because your intent and emphasis is immediately obvious.

On the other hand, the usage I find entirely more amusing is when the caps represent first-person statements inserted into a second- or third-person narrative. To wit:

Proper cash management sets the stage for a tremendous strip club experience. Knowing how much money you are planning to spend gives you the perfect reason to leave when 4am rolls around and you've fallen in love. SORRY SUZY I'M BROKE, SOBERING UP, AND YOU'RE GETTING UGLY.

It's like listening to my parents talk: Dad starts the story then Mom jumps in with semi-related details at the end of each phrase.

Very funny.