Tom Reestman // Hello and welcome to my twin blogs:

I've written about the impossible cool site before. I love today's picture because it presents a side of Marilyn less commonly shown. A side that stands in contrast to either the cute, perky blond or sex bomb the studio had created. Yet here, without all the trappings of "beauty", she's stunning to my eyes.

I love this kind of stuff. Making use of the viewer's intended point of view and perspective to create an illusion.
When viewed from the targeted point, it appears as a specific object represented in space (in the example above, a line seeming to bounce up and down). But when viewed from other angles, you see how it was actually painted to give the intended effect.
10 more great examples at the above link.

It's pretty slick the way this app can continue to update the same post with pictures. I created this post with a new picture, then added two more I'd previously taken (from the iPhone's camera roll), and then added the others one at a time as I shot them.
Before this app, I could either post pictures as I take them, but they'd be individual posts, or take them all first and then copy/paste them into an email for posting as a single article. This app provides a great alternative to those two imperfect options.
However, it's not without issues:
One could argue the above complaints are easily addressed by using Posterous' excellent email interface, and that's true. However, now that I've had a taste of adding photos to an existing post, I really like it. But I want the other stuff, too. Perhaps this is a case of the user never being satisfied, but if Posterous didn't supply such a great user experience in the first place we wouldn't always want to push that envelope.
Even as is, the app is useful. Imagine being on a day trip, or party, or tour, or any single experience for which you'd like a photo record. This app lets you create a post, and then update it as you go with little more effort than taking the picture in the first place. Those sharing the experience have only one URL to follow, and will see your updates as you post them. Meanwhile, you don't have to mess with multiple posts, or assembling pictures after the fact, you just shoot and go. Sweet!
Like the author says: "Don't take it serious, please." Some of these are good for a chuckle (like the one above). See the other 77 at the above link.