In Post Tweet Buttons; Top or Bottom

I always wondered when people are inclined to share my posts here with their followers on Twitter. Is that right after the first paragraph or is it after reading the whole piece. Now, I don't believe my writing is that inspiring that a lot of people would share it instantly, but a little test is easy to set up. So, with the post I published last Friday, Will you Work for Free, I conducted a little test. In the post there are two twitter buttons placed within the content. One right after the first paragraph, the second after the whole post. As you can configure the Twitter button manually here, you can get creative. Both of these have different text which would be tweeted out. Check this out, here you see the screenshots of the first and the second twitter button in the post:

testing in content Twitter buttons - after 1st paragraph
testing in content Twitter buttons - after full post
Now, off to the results. What works better, a Twitter button right up there after the 1st paragraph, or one after the full post?
Apparently, for my style of writing, my audience and the length of the post, I'm better off by relying on people to share the post with their Twitter followers right after the first paragraph than the whole post. 8 people shared the post using the first Twitter button, while only 5 people used the twitter button at the bottom of the page to share it. (see screenshots below)

Twitter-button-1st
Twitter-button-2nd

So these results are far from what you could expect on any blog post, however, it might give you an idea on how to test how likely your audience is willing to share your content with their followers. If you don't test your way into a viral factor sharing, why you keep trying to publish content..?