Why would a modem user claim to be a T1 connection? It doesn't make it any faster...I think

Actually I have a 1.280 Mbit ADSL connection, and yet I declare a slower speed, so I do not get a gazillion people downloading from me and slow me to a crawl. What would the advantage be to declare a higher speed than one actually has?

P.S. Use Audiogalaxy Sputnix for music sharing.