Illogical search syntax

The syntax of SaguBooru's search function is unconventional. Specifically, as in the example, "Azuma Wallpaper" will return all wallpapers, and also Azuma images of all sizes -- cleverly ignoring your clear intent. To make matters worse, this simple search wording will be the one used most by users as they expect standard search syntax to work -- used by every site on the internet from Google to Flickr.

90% CPU usage

SaguBooru makes the Flash plug-in (and thus the browser) use about 90% of CPU-time even when completely idle in a hidden window.I can see the Arctic ice melt right before my eyes!

Duplicates browser tabs

SaguBooru duplicates the functionality of browser tabs within its UI.This is despite the widely-followed advice against duplicating client UI. SaguBooru forces tabs on everyone -- breaking the standard expectation that clicking thumbnails opens the full-size image in the same viewport in the process. The tabs don't work as expected from browser tabs, either -- for example they are not persistent.