Online File/Media Conversion Services

[Sushubh]

I personally use the software based solution Total Video Converter but sometimes Media Convert comes handy.

Other sites:
txt2tags online
Zamzar - Free online file conversion

 

[manu1991]

this is slightly different
vixy.net : Online FLV Converter
here you paste a youtube url and get a converted url (for ur pc/ipod/psp)