Screencapture / Printscreen
Screencapture is useful to share funny conversations and is easier/faster than favorite/copy-paste somethings and to show how different WP7 is to friends. Think about it.
The lack of this function is really disappointing. I hope to get this in a new update.
Hermes Cagn commented
As an incentive to developers: As people are able to print screen their apps and the sleek WP7 system, and share that on social network sites, lots of people that might not even enter a phone store to check out the specs, and just get their "usual iphone order" from their telecom provider, would now see that WP provides a fun, fast and easy system as well. This only from a simple addition such as the print screen.
Printscreen is a must-add! I can't post the new year countdown clock on my wall! what a pity!
Jamie Thomson commented
This (and alot more besides) could be achieved using contracts: http://windowsphone.uservoice.com/forums/101801-feature-suggestions/suggestions/2281518-share-contracts?ref=title
A screencapture / snapshot / printscreen function would be nice. I miss it a lot when I want to share some funny sms conversations with others friends or even to show them how a specific App looks in WP7 when they ask me. To be honest, this is the only thing I miss from my iOS days. Sometimes is way more easier and faster to just "printscreen" something and had it stored in the Saved Pictures like the name of a music playing on the TuneIn radio for example, than favorite, copy/paste or any other way.