Tell your facebook friends that you pay your taxes, but don't tweet about it?

I get why people post pictures and the inane details of their life of facebook.  I get why we all post articles we read on twitter.  But I still don't get why some people want to share some of their online interactions on their social pages.  You would never auto-tweet from the ATM that you just withdrew $500 from Chase or post on facebook that I transfered money from your checking account to your savings.

When I finished up my taxes this weekend, there was an option to tweet or post to facebook that you had completed your taxes.  This was the first year I had seen this.  With the socialize-everything mentality of b2c marketing, I was not really surprised to see it.  I was intrigued by the disparity between posts to facebook vs twitter.  The social sharing prompt came up twice during the verification / checkout process and I snapped a screenshot of each.

This screenshot was taken first.

Even more peculiar was that the second prompt I saw had fewer facebook posts and now only 1 twitter post.  I will give them the benefit of the doubt and say that each link had its own count and that's why there were different counts.

This screenshot was taken second.

Would you share that you pay taxes with the friends you know of facebook or the strangers that follow you on Twitter?  

It must be that people want to tell their friends what good tax paying citizens they are.  If turbotax offered a discount for anyone who clicked on their link, I think their tweet count would be on par with their facebook count.  In many ways, facebook is about boosting your ego and twitter is about boosting your personal brand.

PS. they must have a low threashold for what "fattened your wallet" and "big bucks" means.