I have this tree and I was leary about it being sturdy too.   But my 12 pound
solid muscle cat starts running at one end of the house and then leaps onto the
tree at full force.  He does this several times a day, every single day (did I
say this cat was active?).  The tree is still standing and we've had it about 2
or 3 years now.  The only thing we've had to do is maybe every once in a while
reposition the pole at the top so it's centered.

We also have a more expensive cat tree we got at Drs. Foster Smith, but my cats
seem to like the Walmart one better, or maybe they just like the window it's in
front of better.

Lauren
________
See my cats:  http://community.webshots.com/album/56955940rWhxAe
Raw Diet Info: http://www.holisticat.com/drjletter.html
http://www.geocities.com/rawfeeders/ForCatsOnly.html
Declawing Info: http://www.wholecatjournal.com/articles/claws.htm

We have had two of these trees for about 3 years now for our 2 cats.  I
don't think they would be as sturdy if my husband didn't anchor them to the
wall with simple bracketts.
They absoulutley love them and jump on top of our tv amour and on the curio
cabinet and love to take their naps up there.