Since yesterday we have a new feature in EchoWaves, you can embed videos and pictures into your messages easily, just by copying the url address of a video or image.
For example, if you paste in a message in EchoWaves the url of a video of Vimeo like this:

the video is displayed directly in the message, like this:

the system works with youtube and Vimeo videos for now, but also works with image urls, if you paste the url of an image, the image will be displayed inline.

To see a live example of this you can visit my video blog in EchoWaves

Enjoy :-D