Changing one’s file format to another can sometimes be tricky. There might be a compatibality problem with the file if we did not use the corrrect converter. If we do find one that can do the perfect job, it might charge us some bucks. Now, if you don’t like spend any money for converting your .doc, .pdf, or .flv files to another file format you can always use the free file conversion service from these Web 2.0-ish websites below.
Media Convert
Media convert requires you no software installation or user registration. It helps you convert file, for example to let you read all open Office files with Microsoft Office, convert files into universal formats like Adobe PDF, PS (PostScript) or CSV to print, fax so that you can simply read them on any computer, insert a PDF into your web page by converting it into an SWF Flash file, export easily Microsoft Access database to an Excel table, or even learn morse code with the text to morse converter. 
How to use:
To convert a file located on your computer : Check File mode, click Browse and choose the file, select input format (if autodetection fails) and output format, submit the form.
To convert a file located on a webserver : Check URL mode, enter the file URL, select input and output format.
To make a screenshot of any website (convert it into an image) : Check URL mode, enter the website URL and select an image output format.
This service is quite fast if you ask me. 
Go to media convert’s website: Link
Zamzar
Zamzar has less file conversion format but will help you convert popular file such as Youtube Video (.flv), Windows Media
Audio WMA, 3gp, and several docs, audio, and video type file format. According to the owner, they update the supported file format as regular as they can and you can suggest one if you would like to by contacting them.
How to use:
Select files or URL to convert (up to 100mb in size). Choose the format that you want the file to convert to. Enter your e-mail address to received the converted file.
Make it perfect: If you have another free online file conversion websites to share with us, please write about it in the comment form below. Thanks
Tags: Web 2.0, media converter, online file conversion, online flv converter
April 10th, 2007 at 5:37 pm
terima kasih atas maklumat berkenaan… mekasih bro…
August 10th, 2007 at 5:07 am
[...] Onlin conversion services such as Zamzar.com let you convert your DOC file to PDF for free. You just need to upload your DOC file, and then they will send you the PDF version of the file diectly to your e-mail. [...]
November 11th, 2007 at 2:14 pm
Do you know of any web site o program converting from .CDR (CorelDraw) files into PDFs or any common vector format (Like Illustrator or Photoshop)?
I receive frequently .CDR files. but I do not have CorelDraw.
Thanks!
November 14th, 2007 at 9:43 am
Do you know any website that splits files online???? e-mail me to nitin_sawant89@rediffmail.com
March 10th, 2008 at 10:51 pm
some online cinvertor:
mediacinverter.org
all4convert
vixy.net
…
any body want more tell me