how bad is this frame damage?

[Streetwise guy]

It does not look like much to me, and its ahead of the area thats stressed most by suspension loading, but if you are concerned, ask your local body shops for the best unibody/frame repair guy in the area, and have him inspect it. It will cost you a buck or two, but peace of mind is a nice thing to have.

[Tristan Smith]

well first of all, dont have any "Big Impacts"!

Thats nothing. You should have seen the damage I fixed on the ZX.