As it turns out, you can actually delete wall posts and comments (on your own wall or ones you created) as well as archive messages all by swiping away the item in question. Both left-to-right and right-to-left gestures seem to work, though left-to-right is a bit more reliable and natural.
Last week, I traded my Google I/O Chromebook for an ASUS Eee Pad Transformer/keyboard dock combo and started exploring the fascinating laptop/tablet hybrid. Overall, my impressions so far are more positive than I thought they would be, and I'll most likely end up selling the 3G XOOM that has none of the features the Transformer with the dock have to offer. The only problem with the Transformer that I've experienced is a relatively poor battery life compared to both the XOOM and the Tab 10.1, which I can't explain yet...
WebOS may catch a lot of flack because it never really took off but it does, in fact, have some really awesome features. One feature was the card view multitasking, which has already found its way onto Android. Another cool thing it did was that wacky swipe-up-from-the-bottom launcher gesture. Well, folks, guess what there's an app for now. It's called Wave Launcher - and it's great.
Wave Launcher's beauty is in its simplicity, just like its WebOS predecessor.