Yes, its a typo in my above post, it should read 233 and not 133.
Tick charts can add a bit more info about the breadth of the market by counting down the number of transactions (trades) made, if the market is hectic you can get bars much quicker, and it will give a clearer picture of the market dynamics.
Some people prefer to use volume charts, which is the real volume number of actual contracts traded, and not the number of transactions.
You can have one transaction with 10 contracts, this would make 1 tick on the tick chart, and 10 volumes on the volume chart!
Both are interesting!