Blogger - modify hyperlink to open in new page.

Just add 'target="_blank"' attribute in the 'Edit Html' mode just after the href="URL of the story" in Blogger editor, the target URL will open in a new window.

for example:
original: a href="URL"
modified: a href="URL " target="_blank"

This is easy!

You can apply the same logic for images also.

addthis - bookmarking and sharing service.

Now forget adding stumbleupon, digg, del.icio.us, etc button separately in your blog. Just addthis widget and enjoy all the bookmarking and sharing services present on the web.