It may have started later than anticipated, but this year's Steam summer sale has commenced, so everyone be quiet and go scan the home page for savings like you've never scanned before.
Daily deals will run today through Sunday, July 22 and this time we've also got "flash sales" to keep up with. These are discounts that are available for less time than even the dailies; the first batch includes Deus Ex: Human Revolution ($7.49), Mafia II ($7.49), Rayman Origins ($14.99), and SpaceChem ($2.49).
Beyond that, Steam is letting users vote on which games they'd like to see go on sale. If you're having trouble viewing specific game pages or even logging in to the website, you aren't alone. Also, remember to pace yourself so you don't overpay for something that ends up being a heavily discounted daily deal.