Yeah, I just started last night and played for 30-50 minutes or so, I forget. Being a BIG lover of word games and all that, I managed to get to Rank 7, but decided to come back later. Highest tower was... a bit over 5,000 meters, I think, but I bet someone has some FREAKISH height already.
Honestly, the main thing to do to get a taller tower is to do the following:
A) Rank up a bit.
B) Use good prefixes when you can (Che is a GREAT one).
C) Be a fast typer.
If you have fast fingers and can churn the words out, it really, really helps.
EDIT: Oh, and they DID leave a few words out. I'm going to start making a list, I think. There was a common one they lacked but I've already forgotten it.
DOUBLE EDIT: Oh my GOD! HAHA! They use "Bromance" as a real world on this game! I AM SO HAPPY!
So, I got to 11,000+ meters and Rank 8 today. Well... Apparently, to get to Rank 9, I need to use 10 words that have both 'Q' and 'X' in them in a single game, have a tower 4,000 meters tall without using the letter 'E', and have a 16,000 meter tower.
I hate the maker of this game now. This is both fun and infuriating.