Where did these share options come from? Recently some new share options started appearing on my phone (Galaxy Nexus running Android 4.2.2):



They include the first three you see here:


AIM
Baidu Space
Blinklist


I haven't installed any of these apps. I checked to see if they were installed without my knowledge (sometimes my girlfriend borrows my phone) and I don't find any the apps listed among those installed. And when I click on one of them, it doesn't launch an app but prompts me to pick a browser option in order to, I presume, take me to a web page.

So does anyone have any idea where these come from? Is this some kind of crapware that got installed on my phone? And more importantly, does any one know how I can get rid of them?*

*I used Andmade Share to customize my share menu, but I'd like to purge them from my phone all together.
I finally figured this out as I was cleaning out the apps on my phone today. 

I had installed this Bookmarklet app as a way of sharing links with Delicious from my phone. Unbeknownst to me, the sharing options had gotten switched. 

So that's where these mysterious unwanted options had come from.