Ok, as i said this is based on a real life hack. Notice the message:

Your Link has been submitted. It will be added if appropriate.

This means that the links are being viewed by the site admin. you need to find a way to bypass this using the form so the links are just added straight to the site. Then half of the challenge is done already.

Signatures added! go to my account to add your own

i saved the web page by editing the source and it echoed my link "XXX". and i saved it on desktop bt XXX.html. now what to do???????

i hav echoed a link in the saved page is that right???

by the way how do igive a link online?? by javascript injections ???? any hint for online injections???/

This wont work if you save everything. And yes, javascript injections are used to bypass the admin checking the link. You still need to find out how though. The form gives it away completely

Signatures added! go to my account to add your own

I have inserted anything I like on the page and I have a "Your close to completing this though." message, there are lots of things I could be doing with this exploit, how can I narrow down the possibilities?