dipper, I agree. It's just if you plan on day trading it nice to know where you are most likely to find the best liquidity.
If all you need is seeing which strikes have the highest volume then I don't see how a website can beat the broker's platform and data feed, unless your broker's platform is not very "good".
MTE, I use IB but I don't want to look up each strike for volume. It's nice when you can see all the strikes and the intraday volume on one page. You check it a few times a day to see which strikes are hot.
What do you believe makes a strike hot? If you saw a lot of volume in a particular strike how would you know what to do with that strike? Was the volume a hedge for something else. Did a hedge fund or other institution buy puts and stock to make a synthetic call? We're they buying puts/calls to close a position they opened long ago or did they sell puts/calls to open creating the volume?
Volume at strike is not predictive of anything worthwhile, but IB's optiontrader offers a full configurable chain including volume.