Energy Fiend... Annoying Nav

This post is going to be more of a quick hit, since there isn't a lot to say about the site in general.

I was having a conversation with my office mate about caffeine content in drinks and she decided to go looking for a source. She found:  www.energyfiend.com/the-caffeine-database

The site has the exact information we were looking for and the information was sortable by name, caffeine level, size, type... all very useful. The blue hyperlinks take you to another screen with an image of the product and ordering information, if available.

HOWEVER... we quickly realized that if you performed a sort, clicked on a hyperlink and then hit the "back" button to return to the main page your sort was dropped, returning you to the default alphabetical listing by product. The expected behavior would have been to retain the sort rather than forcing us to resort and scroll back down to the "M"s to find the caffeine content of Mountain Dew vs Mt Dew Code Red.

As soon as we noticed this behavior my office mate looked at me and said "Something for your blog"... and here it is. 

LESSON LEARNED: If a user performs a sort or a search they will expect that to persist during their stay on your site. Don't make them do the same thing over and over again or they will get fed up and leave.