Thats the entire point of the site, to get both sides of the story and being able to vote and discuss on it!
I wouldn't use this website to decide what champion to buy next, or what to pick in a ranked game vs a specific champion. Some of the results are just plain wrong. There are champions whose top counterpicks dont even counter them; in other words, they're not the "most-countering", they're the "least-countered", if that makes sense (see Yorick vs Trundle).
I try to take the following widely accepted facts into account when counterpicking:
Gallio and Cassio counter most mids.
Olaf and Yorick counter most solotops.
Shaco counters most no-escape squishies.
Urgot counters most range ADs.
Udyr and Shyvana counter most slow junglers.
Janna counters "press R to win" comps.
TF mid + Nocturne jungle counter overwarded bot lanes.
Leblanc counters noobs.
Last edited by thoukaia; 2012-04-27 at 10:51 PM.
Feel free to PM me about any question you might have regarding LoL.