I have investigated a little bug in Kazaa trying to find a way to masquerade filename.
What I found is that Kazaa programmers were a little smarted and consciously or not blocked that thing.
Kazaa uses a special symbol as delimiter between columns when sending textual information to its tree views (Search results, Downloads, Uploads). If you place this symbol into Title or artist of the file you share, someone else may see the line representing your file screwed up, because you messed up the order of columns with that trick. I thought that this is a way to mimick file name and username. But all I managed to spoil was the Progress column in Uploads and Downloads view, in which it is really possible to place a desired text. Other columns are shown correctly. File name, size, username cannot be masked like that. And this text in Progress column is only visible when it is not active; when you are actually dlding, it is replaced by progress indicator. So, the bug is very, very little, but still a bug
So if anyone wants to surprise people, he can arrange titles of his files so that users downloading from him see any text in Progress column
Not sure if this trick can be named "tip", i post it just for fun