Basically, I will never use weather.com and when I see people using it, it pisses me off...
I generally use the National Weather Service's website (
www.nws.noaa.gov), and if there's something interesting of note or I want more insight, I'll go to their "Forecast Discussion" page on the bottom right of the local homepage. This is where the actual forecaster, usually twice a day, writes what he/she is looking at and why he/she is predicting what he/she is.
Their radar products suck because they use simple doppler, but the Storm Relative Velocity products are really good and something I haven't found on most commercial sites. It's useful, especially in T'storms for determining rotation (i.e. tornado/possibility of a tornado). Most tornado warnings in fact are issued based on what forecasters are looking at not just on regular radar but primarily on the SRV.