Multiply is a social networking service with an emphasis on allowing users to share media - such as photos, videos and blog entries - with their "real-world" network. The website was launched in March 2004 and is privately held with backing by VantagePoint Venture Partners, Point Judith Capital, Transcosmos, and private investors. Multiply has over 11 million registered users. The company is headquarterd in Boca Raton, Florida.
Photo Flash Maker Pro can create stunning slideshows with basic and advanced themes. And both the slideshows created with basic and advanced themes can be embedded in Multiply with a few clicks. Before you embed the slideshow in Multiply, you need to upload the slideshow to go2ablum. You need to sign up an account of go2ablum at first, it’s free. Please visit http://www.go2album.com.
When you publish the slideshow, please select Create flash files and upload to go2ablum. After you uploaded the slideshow successfully, you will be led to the slideshow page automatically. In the opened page, copy the the embed code of the slideshow.

If you want to embed a YouTube video, just do it in the same way.

Step 1 - Copy the code from the box above.
Step 2 - On your Multiply.com page, click on the Post link (top of the page).
Step 3 - Click on the Blog icon.

Step 4 - Type in Blog Title. E.g 'My vacation'
Step 5 - Click on the View Source check box.

Step 6 - Paste the code into box (Right-click in the box and choose "Paste", or just hit Ctrl-V). Be sure to give a title!

Step 7 - Click Save & Publish and you are done!