Is there anyway double spacing after a quote can use less space?

When people quote others there is a lot of extra spaces in between the quoted text and the new text.

Example1 said:This is my example quote

I double spaced and this is where my new text starts. See, lots of wasted space. I've started writing my replies like the next example to compensate.

Example2 said:This is my second example See. This text doesn't waste as much space. I wrote this reply on the same line as the quote in the message editor. It looks nice until you use the editor and see all of the text from multiple people as one long paragraph.

Less space between quoted text and new text means less scrolling and with 20+ messages on a page it can save substantial abuse of my mouse wheel. I've seen in other forums where double spacing after quoted text doesn't skip as much space. Is there anyway double spacing after a quote can use less space?

Is an unworkable solution really a solution?