Picasaweb, Flickr and YouTube are all using email attachments to upload pictures and video. The key is the find the unique email address which each provider gives you. Then don't forget to use the Subject field and the text body for caption and description. Anyone can get the link using this URL. Does the quality differ?
I do find this quite neat! I've just recorded a short 50 second video in my apartment. I've then followed the instructions to get that video to my You Tube account. (It involves sending the video as an attachment to a unique email address at YouTube.) A few minutes later it becomes available on YouTube. I play it on my lap top. It works (though the sound could be louder). I then look for the "Embed" on that same page. Clicking on it gives me a new page with the code already highlighted. I copy it, then go over to Blogspot, open the "Edit Html" view and copy the code in at the top. Then I enter this text and create the new post. Voila! The YouTube video is available in the post window.
You can even add Subject and Descriptions captions. Put the subject on the Subject line of the email to which you are attaching the video. This becomes the main label ("Notes for YouTube"). Adding further text in the body of the email will become a description label. This is the way it works in Flickr as well. No problem adding tags with the "tag: Notes" including on either the subject line or in the message body.
This makes it very easy to upload video and pictures. (And audio notes -- must check on that as well.)
This is really remarkable, not only as a trail but as a record of a trail. One can embed a video from YouTube quite easily. From the "play" URL, just look for "Embed" and copy and paste the code into the "Edit Html" tab of your blog or website page. This will become the top window for the post. You can place the text under the code. Now about the trail itself. It is on Huashan (Mt. Hua) near where I will be in Xi'an, Shaanxi, China. I think I shall not walk that plank.
Instead of just a picture of what you see in Google Earth, you have Google Earth! You can zoom in, out, tilt and rotate in this embedded Google Earth window - if of course you have the Google Earth Plug-in and the Google Gadget that generates the embed window HTML and the instructions on how to do it. [This page loads fine in Chrome, but does appear to have some hic-cups in IE, especially after the two more recent postings load.]