Well, as said earlier, the 120 second rule is here to prevent spam. Bandwidth is not only precious, but also pricey. So, for the sake of iG (the hoster of this forum), I say that the 120 second rule is wise. Someday, ChouSu, if you buy hosting from a massively popular and fast host, you will also find that bandwidth is not exactly cheap.
Just to tell you, this issue has been addressed before. In fact, it was actually lowered to 60 seconds for a time. However, there was an ungodly amount of spam, and the time limit was raised again. So, I hate to do this, but dont expect to see this time limit lowered again.
Now that the issue has been recapped and readdressed, I will close the thread. Sorry to disappoint u, ChaoSu