You can now use /find_image in reply to a photo posted by the bot to either get the highest quality it can find on flickr (if the image is originally from flickr) or the file from the database uncompressed. keep in mind the bot has to search through 118000 images every time the command is run so please be considerate, i don't want to have to limit it's use
Not sure if it will be useful to anyone, but you can now use /remind_me with an amount of time and a message: /remind_me 1d2h3m4s the reminder goes here