Blogger and sharing blog posts

So I've been thinking. I have my blog and I use it to share things that are on my mind. To let everyone know that there is a new post I share the post via Google+ and Facebook.

I configured it that I automatically get a popup for Google+ after I published a new post. Then go to the page and share it for Facebook too. So far so good.

What I would like to have is that maybe the first ... 50 words ... are visible in my shares to make it a bit more interesting for people to clock on it. If anybody knows a solution to that ... I am listening.

Right now I started to copy and paste a certain amount of the post.

I wish you well