Awesome cool sites, but what about the Korean ones? They're quite useful too, let's list them...
http://www.forhythm.com/ In this site you can download the latest version of Direct Move, TOPNova's KSF Songs (and I think a DM skin also), and Fan-made KSF Songs. Cool site when you want to download new things.
http://www.prebirth.wo.to/ In the past, this site was known for it's incredible comprehensive collection of Rebirth KSF Songs, now that's over and everyone has them, but I think it's important to mention that anyway, hence the name of the site. Nowdays, this site generally has Stepcharts of the newest versions first than the other ones, but I have to say that some Stepcharts contain little arrow errors, mostly the Exceed 1 ones, haven't look at the other ones though. You won't find much stuff of interest, but might be useful.
http://www.stageclear.net/ Korean site well known for it's incredible collection of Stepcharts, ranging from 1st dance floor to Exceed 2, and Zero is yet to come. In terms of originality of the Stepcharts, it's very reliable, perhaps more reliable than all of the other sites. Very recommended.
http://www.topumpitup.co.kr/ The legendary site that to this date still has all the KSF Songs for download from 1st dance floor to Exceed 1, most of Exceed 2, and some of Zero. The site also contains other Pump information and MP3's. The only problem of this site is that you have to register to download, but it's not that difficult anyways. Highly recommended.
http://cafe.naver.com/ksfnet.cafe The sucessor of KSF NET, this Korean site was the first one to have all Exceed 1 KSF Songs in all modes, the problem is that most of the songs had errors on their KSFs, and they're the only ones available to this date (in fact, they're the same ones TOPumpItUp has). Today, this site holds some KSF Songs for Exceed 2 and Zero, Flycu's KSF Songs and KIU theme, and some Fan-made KSF Songs.
http://www.m-g-z.com/showdown_ost.asp?ost=7110&sm=m There is not much to talk about Pump on this Korean site, since it mainly has MP3's and some Old KSF Songs, and other similar stuff for other Music Games. It's a pain to navigate in this site, at least for me. Well, the link I posted takes you directly to Banya's 2nd OST Download, which is the coolest thing (according to me) you'll find on the site.
That's all, hope you read everything since I took a while writing it hehe, and hope it's useful. Laterz...