ShareThis is a popular plugin feature seen at the end of many blog posts. It's obviously popular with bloggers, because it enables readers to distribute content. My question is to you as a 'site visitor/ reader' - how often [if ever] do you use the ShareThis feature to bookmark / list posts at the social media sites available? My suspicion is that this feature may not be quite as popular with readers as it is with bloggers ...
I used to use this plugin in my blog.... however, I have flipped over to socialable since the last three months mainly because Share This have serious theme compatibility issues with excerpts.
I am more comfortable using Addthis since it is fast and easy to implement in the webpage. Feedburner also has the option of embedding its sharethis-add-this-like code in every web page.
I also switched to AddThis which is pretty simple to implement. I had some problems with ShareThis seriously slowing down page loads, although this may have since been fixed.
I also have been using AddThis ever since and I have no problems in adding it on every end of my post automatically.
I also switchedf to Sociable. I don't like having to issue a call to the ShareThis site with each page load.