May be a dumb question...but

[jack23]

Whenever I type in someone, the resulting list comes with a few yellow colored files at the top. Next to this, there is a price, so these files presumably cost money. However, how can you be charged w/o your credit card information and what not? Just wondering.

[Miniver]

I'm guessing you're asking about Kazaa and altnet. I believe that those are altnet's drm files. Altnet has a business relationship with Sharman Networks, the owner of Kazaa, to distribute free trial content. After a few uses you will no longer be able to use the file without paying for it. I don't think you have to pay before downloading it, just if you want to keep it. I could be wrong though, as I haven't used kazaa for years.

[Crazy Horse]

This happens on IMesh too. You can't be charged in "advance" unless you have signed up for their service and given them your credit info (you would have to be a fool). Miniver has it right I believe. I'm into the free thing so I never click those anyways. :)