U2's Bono may be the poster boy for rock star philanthropy, but Henry Rollins thinks he's doing too much.

In an interview with a Metroactive, a California entertainment newspaper, the ex-Black Flag frontman voiced his concern over Bono's ambitious undertakings.

"I hate this guy's music, but I like the idea of absolving Third World debt, because otherwise these people are going to die," Rollins said. "So if he's using all that rock star power, well, right on. Like he's Mr. Africa Third World Debt Guy, which is a huge issue, but now, he's Mr. AIDS Guy. Well, wait a minute, how did you go from Third World debt to AIDS?. It starts to sound like he leaves a lot undone."

Rollins, notorious for ragging on U2, is involved in his own charitable endeavour. He recently released a benefit album "Rise Above: 24 Black Flag Songs to Benefit the West Memphis Three," to raise defence money for three men many believe were wrongly convicted of murder.

In a 1992 NME interview, Rollins called Bono, "the most pompous, pretentious, unbelievably crass guy I have ever encountered in music."

While he still questions Bono's motives, he seems to have eased up on the Irishman since. "Is this a crusade or really good promo for U2's new greatest hits album?" Rollins contemplates his own question in the recent interview, and continues: "I have to think his heart's in the right place. I think he's a boring singer, but I don't think he's a bad man."

Rollins kicked off his spoken word tour in California last night, and is set to perform in Vancouver on January 11th and Toronto on February 1st.