Not to split hairs, as it probably should go to the Ethics thread - but matching TRU.com stil counts as a price MATCH.
Some cashiers may do Price Adjustment, but they are actually incorrect in doing so. Price Adjustment is something that is supposed to happen after point of sale, (after coupons have been applied, yadda yadda). Eg: You buy $100 set, apply coupon and TRUTH - and it comes down to $75. You see an advertisement for said set for $70. You can come in and get it ADJUSTED down to $70, getting a refund of $5. With the TRU website, in this example - if you buy something at $140, use a coupon and TRUTH and it comes down to $110, and see it on the website for $115, price adjusting won't do you any good as you are still up $5. You can ask for a Price Match before hand, but coupons will no longer work.
Just want people to be aware of what they are doing when they do it. If you are asking for a price that's on TRU.com, it's still a Price Match, and theoretically coupons and whatnot should not apply. Using the Price Adjustment is a loophole as Exciter mentioned, not everyone will do. So if you want to toe the line, at least be aware you are doing so. (Similarly, as most people know - you aren't really "supposed" to stack coupons or even re-use the same coupon.)
Again, not starting a war or casting opinions, just stating how the policy is SUPPOSED to work. Carry on.