A good long while ago, I talked to Sumana and Leonard phonewise on the same night. We all three discussed
Qwantz, which, I think, is rapidly becoming the darling of the whole entire Interweb. Sumana pointed out how their creator hides further punchlines in both a title tag for the comic image itself
and in the subject line (sometimes even the body!) supplied by the "comments" email link. Leonard and I talked about the idea of hidden content in general, and other ways to put
Easter eggs into web pages.
The title tag (formerly the alt tag) shows up in several other webcomics--
Achewood, for example, and until recently
Scary Go Round. I know there are more out there, I just can't remember which ones.
Homestar Runner (warning! Flash!) includes at least one hidden
hot spot in each of their weekly updates, as did the now-defunct animated comic
Boomslang. The latter originally inspired me to start adding the occasional hidden rollovers to
my own comic.
Lore Sjöberg, formerly of
the Brunching Shuttlecocks and now of many distributed sites, announced once that he was going to use stylesheets to completely hide some of his href tags as a way of making his blog more interactive. I'm not sure if he ever did it, as I've never found any, but then I haven't really searched that hard. Similar to this is the "include a clever or didactic title for every hyperlink" meme, which I, for one, picked up from
Kevan of kevan.org. It's both
highly contagious and strongly persistent, and it's been interesting to watch its spread.
The logical extension (or
perhaps origin) of all this hidden stuff is code comments, especially in HTML.
One of the better examples of this is last year's great Crummy entry on
"concave" in Chinese, which prompted my unnecessarily clever
complementary entry; I'm pretty sure that that, in turn, is what got me on the RYCB author list (as the only alternative was allowing me free to roam the streets).
The reason I like searching for all this stuff is the same brief, pointless sense of achievement that's kept people playing
computer RPGs and watching
Scooby-Doo for so long. The reason I like creating it is uncomfortably close to the clue-sending instinct that drives the more interesting serial killers. All together, though, it does actually provide an interesting goal: in the same way that hyperlinks allow for richer expanded context, hidden material increases the density of content in the same amount of real estate.
What other methods of hiding stuff are out there?