Here is a little ruby snippet that will download all pictures from a webpage. Rather than using XPath, we are going to first reduce the source code to capture everything inside of quotes. Some websites use JSON w/in a script tag to lazy load images an...

To get a Gravatar you need to hash an email address with the MD5 algorithm. MD5 is a part of the Ruby standard library. Rails loads it by default, but otherwise you will have to require it yourself. This is a simple implementation. Gravatar su...