Google still hosts the BlogThis! bookmarklet at https://www.blogger.com/blog-this.g but they've removed all documentation. Google Search finds old posts, bad links, and splogs. If you drag above to your toolbar I think it will work (did for me). I am seeing new issues with Blogger's perennial line feed problem, so maybe that's part of the removal. 
In a similar vein the Blogger online documentation of limits doesn't mention the now 5 year old limit on search -- only the past 5000 posts are searchable within blogger.
On the one tentacle I'm surprised Blogger still works -- Google deprecated it years ago. On another, my RSS feeds are busier than ever, and Google has quietly returned to blogs for its external communications -- tacitly abandoning G+.
Interesting ride on the pseudo-IndieWeb of Blogger, one of the last remnants of pre-Evil Google. I've been using WordPress for years for my microblog posts and I'm happy to report that the migration tool continues to be updated (though last I looked it was still WP 3.5, we're on 4.0 now).
 One of the original sins of the personal computer was the CRLF, LF, CR division between DOS, Mac and Unix. Extra blank lines with various combinations of editing tools is the price paid for Bill Gate's CRLF blunder. He should send us all checks by way of compensation.