In my local area, MTVx was replaced by MTV Jams. It was on channel 272 in my area when it happened. I just got Digital Cable about six months prior, and was thrilled to finally have a rock music video channel. Then one day turned it on and found "Yo Yo Yo" being played instead. I wrote an e-mail on the old AOL dial up to MTV, which they said that the cable company switched the channels. Then about a week or two later local rock station WAAF was complaining about the same thing. Turned out MTV was lying, they dropped MTVx for MTV Jams. Also, a simple wikipedia search for MTVx will also tell you that it was discontinued and replaced by MTV Jams. Their claim was that Billboard charts and ratings proved that a Hip-Hop and R&B video channel would be more useful than a Hard Rock video channel. MTV2 for a while picked up the slack, but in Viacom's quest to keep Rap fans from looking elsewhere, and more providers picking up VH1 Classic, rock was kicked off MTV2 as well.