Welcome on board!

...most of the urls are found via following links through spam-mails,
checking the html source of "not-so-clean" webpages...
(
bobby's
Malzilla is THE tool to make life easier for tasks like this),
lurking around in irc and trojan exchange forums,
in order to gather and reverse botnet/backdoor samples etc...
you get the point,these are some of the commonly used practices...
As for submitting links,yeah,sure you can...that's the main point after all,
just wait a bit until
JohnC (ie.the...
boss,lol!)

logs in...
in order to provide some thorough details on how to...

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...hey JohnC,that's an interesting question/topic raised here...
maybe there should be a "sticky" in the main page or something,
in order to make the whole process easier for people,
ie."How to submit url pointers to malware"...
or probably via a sub-forum maybe...what do you think?