SFlack

Like & Share My Site (LSMS) is a plugin that will allow you to have social ‘like’ and ‘share’ buttons added to the end of your posts. Currently it can display buttons for Facebook, Twitter, Google+, Tumblr & StumbleUpon.

Like & Share My Site

This plugin allows you to add social 'like' and 'share' buttons to your site and individual pages.

dechadou

This plugin will allow to import images from any Tumblr blog into wordpress. 
It will automatically create the posts with the image set as Featured Image.
You can also set the post format (Standard, gallery, etc), the ammount of images to be inserted and the status of the post (Published, Draft).

Tumblr Image Importer

This plugin will allow to import images from any Tumblr blog into wordpress.

Like & Share My Site vs Tumblr Image Importer