a few things!
ok, i dont have any flash knowledge, so i have no idea how possible these ideas are. but i figure ill say them anyways.
first off, great game. i loved the physics.
maybe im just stupid, but i cant find any volume control. next time try making it so you can turn off the music.
ok, now onto the real suggestions. maybe somehow you can make it so you can see the top 10's towers. like im so curious as to what a 9000+ tower looks like. what would be even better is if you could watch it collapse too hehe. that had to look pretty cool.
also, for maybe next game. add more physics into it. like maybe "chords" that can be placed to help "pull back" when the tower turns, like a suspension bridge would. so have like a seperate button to push to create a chord that doesnt have any "pushing" strength, but has "pulling" strength.
another idea is sometimes the placing was a little hard. like i would try making a point off of one joint, but because the other joint was closer, it would automatically switch the blue line to that joint to build from. even though i just wanted a long blue one from the other joint. if that makes sense...
another idea for upcoming games is try to add different types of playing spots. like one choice could be 4 anchor points at the bottom. the other could be only 2 anchor points at the bottom (like you have). and different things like that.
i definitely hope there will be a sequel that expands on this! and somhow make it so that when ur tower starts rocking, u can actually stop it. because it seems to be the kiss of death if it rocks. like the energy should dissapate each rock back. like every time it rocks left it should rock left a little less the longer u just let it sit there.
good job! i love it!