Hey, Rob Thomas. It's not wise to insult your audience.

Even though your band, Matchbox 20, is at the top of most people's lists these days, the music business is still extremely fickle. Fame is fleeting. Just ask Hootie & the Blowfish.Mr. Thomas, you're an incredibly talented singer. Your band is white-hot, and all you guys know exactly how to maintain the energy during a concert without having to resort to pretentious posings.

Unless you count your casual cussing. Right now, you don't have to prove anything. So don't ruin your success with stupid mistakes.

Take a look around. Matchbox 20's set rocked. You guys had an awesome light show that never lost its luster. You also had an impressive split-screen video backdrop that flashed about some cool fast-motion, slow-motion and psychedelic images.

Lead guitarist Kyle Cook, rhythm guitarist Adam Gaynor, bassist Brian Yale and drummer Paul Doucette were right on.

When you kicked off the set with "Argue," the audience could tell there was a lot of energy inside you guys. In fact, nearly everyone stood to welcome you to the stage.

"Girl Like That" and your more popular tunes - "3 a.m.," "Real World" and "Long Day" - were exactly what the fans wanted.

You even threw in a couple of welcome surprises; that Southern blues version of Sinead O'Connor's "Nothing Compares to You" and the set clincher, "Hang," were innovative and cool.

So, please, explain, Mr. Thomas, why did you have to flaunt the lit cigarette during your encore opening monologe (you know, the "Utah" song). How much are the tobacco companies paying you to endorse their products? And how much are they paying you to recruit new, young clients?

And another thing, why did you call some of your fans the big "F" word when they were just trying to enjoy your music?

Don't get a big head, please. Matchbox 20 is an important and talented band. You don't need an ego to alienate your army. Remember when Hootie & the Blowfish named their second album "Fairweather Johnson," which made a jab at fairweather fans? Well, the band lost more than half its listeners.

As for Soul Asylum, you guys might not want to start off the set with Van Halen's "Jump." Remember, David Lee Roth is a washed-up singer. And, well, to be blunt, Soul Asylum isn't as vital as it was, say, three years ago.

Semisonic, you have what it takes to make it big. Your show, your attitude and your songs were creative, fun, upbeat and fresh.

The lonely tinge of "Closing Time," the weary road feel of "DND" and the down-to-earth audience participation segment hit the spot.

Keep true to those points and you will find success really is sweet.