A very sloppily designed soundboard.
It is missing about half the dialogue from the original clip, which was less than 2 minutes to begin with. There's a lot of keys not being used, so it most certainly is not for lack of room on the keyboard. Worse, most of the sound clips that are offered here missing bits off the beginning and end. "Dot"s 2 and 3 sound like "ot", "By" sounds like "eye", "stranth" sounds like "tranth", "explain" sounds like "splain"... you get the idea. Finally, it lacks the "O Fortuna" soundtrack, which I'm sure is the one track everyone would have wanted to use while playing a "Dot Dot Dot" soundboard.
If I were to try and actually use this soundboard, whether for a sentence-mixing video, spamming a vent, or anything else a soundboard is normally used for, the results would be poor, to say the least.
Overall, this strikes me as a half-hearted attempt to bank entirely on the success of the flash animation it was based on. Even though the original animation itself, hilarious as it was, took relatively little effort (compared to frontpage frame-by-frame animations), it still deserves a tribute with far more effort than what was presented here.
And yet, everyone up to and including the admins in charge of picking front page material have completely bought into this. It blows my mind.