In an effort to clear up some obvious misunderstandings, I will attempt to make a few things clear.
First, Rammstein is more popular than ever. It is a common misconception (particularly in the United States) that Rammstein was a one-hit wonder. Untrue! They actually had two hits in the U.S. a few years ago (Du Hast and Engel, both from the Sehnsucht album) but they have an enormous following in Europe, Australia and other parts of North America which has done nothing but grow. They also have a pretty solid fan base here in the U.S., they just don't get a lot of airplay (see following sales list). They also didn't tour the U.S. last year because they were busy writing their current album Mutter. Mutter, which was released April 3, 2001 debuted on the following charts:
All in all, not too shabby for a one-hit wonder.
I would also like to address the allegations that Rammstein makes nazi music. The only people who could possibly say that are those who both do not speak any German at all, and people who think there are nazis waiting to pop out of every corner. Rammstein mostly sings about sex and relationships and the emotions brought on by both. Their music is very dark, heavy, and oppressive, but the lyrical subject material is emotional or sexual in most of their songs. Their first two albums were named Herzeleid (meaning heartbreak in English) and Sehnsucht (essentially meaning longing) nothing overtly nazi there. They are also very anti-violence, which is apparent in their songs that are not about sex. They describe the horrors of violence in several songs, and they don't glorify it, they despise it. In summary, all that is German is not nazi. Please remember that.