Sigh, had enough of this. Let's cough it up:
If people block you, keep on rushing. Whether they KEEP blocking, you can try last second turns if your any good. Means you actually swoop towards them, and just 1 meter before you hit them (with quite a high sensitivity) your going above him and try to hit him when you've passed him(still from above), that counts as a back-hit and can't be blocked.
Or, you don't like proper melee, and just laser the hel out of them, that's fun too. If your any good with teleports, you could teleport next to him and hit him before he knows your next to him (hence the "good with teleport" thingy).
As for the people who still don't get it, I believe I fought some people who blocked in a demo. It's kind of slobby in the start, but you'll get the point.
http://www.angelfire.com/pro/kevvie/Lynxpub.rar
[If this is advertising, feel free to remove it.]
-Lynx-