Mauro,
I tend to agree with Hrvoje. If you decide to open the Pandora's box and implement iconv support, please, please, provide an option, preferably default one, to configure or use wget without iconv. FYI, there are languages which actively use more than one coding. For example, I know 14 different codings for Russian language. It is rather common that either the charset at the remote host or the charset at the local host are set incorrectly. iconv will choke in an attempt to recode strings to UTF-8 and back in such a situation.
Leonid