Lately I've been seen threads like this quite often here and I just don't understand what's the big deal. I personally love K-pop very much. Actually, I'm listening to MBLAQ right now when I write these sentences and see no similarities with anything. I've been listening to MBLAQ almost non-stop for two weeks now (That little BIG BANG play-day yesterday doesn't count). K-pop can be great.
And I confess that I used to hate it back in 2008-2009 just because it was from Korea. Then my friends made me listen some songs in early 2010 and I thought it's not so bad. Later that year I became a k-pop fan and it's no shame. But it makes me very angered at times when people say it sucks. It's just music. You don't have to listen if you don't like it. It's that simple lol.
And more than that, if you hate them releasing japanese remakes of their korean songs, don't listen those remakes. Listen only new material. I decided to do that after I got tired with 4minute's endless japanese remakes and stopped downloading those. If I download, I only download the new stuff (if there is) because korean versions are always better.
And you're all worried about how much K-pop is present in Japan...? Well, I remember someone from a Korean record label said they could invade western music market in 1-2 years onwards lol.