I would just like to hear some your tips that you can offer on building towers in Goo Corp.

One tip I can offer is to orient your triangles like this:


It seems to me that this method is stronger and easier to build on.
Takes some work to get the lattice going though.

Also, you can create a small secondary tower while you work on the main one to hold all your goos on, so they don't cause your big one to wobble.

DON'T end up like this: http://img392.imageshack.us/img392/9219/10172008005718ws2.png

Oh boy, that really hurt. One more and I would have had it v.v

That happened to me three times on that level - then I realized how incredibly stupid my building plan was (I was using half of my goos on an area that was totally unnecessary), so I redid it and had plenty to spare.