RIP Yahoo Pipes

As of August 30th 2015, users will no longer be able to create new Pipes. The Pipes team will keep the infrastructure running until end of September 30th 2015 in a read-only mode. http://pipes.yqlblog.net/

Pipes announced before that the service will be shut down. Now it's completely dead.

Image Placeholder Services

Here I listed some of my favorite image placeholder services :

1. https://placekitten.com/ - all of your placeholders will be kittens! (Or if you like bears http://placebear.com/)
2. http://placehold.it/ - boring placeholders but your draft will be more professional without kittens. You can change format, color, text and size
3. http://fakeimg.pl/ - alternative to placehold.it
4. http://loremflickr.com/ - Random real photos with given sizes. You can give tags or you can get only black and white photos.
5. http://p-hold.com/ - This service has too many features for image placeholding.
6. http://dummyimage.com/ - alternative to placehold.it . Thi service has also an interactive placeholder url generator form
7. https://placeimg.com/ - You can select categories. 
8. http://lorempixel.com/ - This service is more popular among others (has no more features from  p-hold.com but faster). 

Others 

This second list also has many funny services. Have a look

• http://placebeard.it/ - Bearded pictures
• http://www.stevensegallery.com/ placeholder images of Steven Segal
• http://www.placecage.com - Nick Cage placeholders
• http://www.fillmurray.com/ -  Image holders filled with Bill Murray
• http://www.nicenicejpg.com/ only Vanilla Ice jpgs

Bonus

Http status code image holder service

http.cat