Add Search to site

[t20]

Add category/tags to each slide.
Search by keywords.

To do: research redis search

[xcash]

Just a quick note on search. In the demo i see you try a POST. The best practice is to use a GET request with a param named q. This way google analytics will track the frequently searched terms and, most important, you can share the link of a search.

good luck for the webapp :)