The revamped Press This in WordPress 4.2 includes new options that can be modified by filters or a plugin like this.

[ADOPT ME!] Linkmarklet is an alternative to the Press This! bookmarklet aimed at rapid linkblogging. Quickly post while saving a link to a Custom Field.

Adds a 'Press This' item to the '+ New' drop-down in the Toolbar for directly accessing Press This.

Share content with Facebook, Twitter, and many more.