All of our posts are categorized by the photographic style they were taken or meant to be taken.
Tags contains more of technical information for example ASA or ISO, camera model, lens type, film, developer etc. Sometimes there might be a tag for location as well.
Then there is a tag called Rodinal-style developer that contains all developer derived from Rodinal developer: the original Agfa branded, R09, Adox Adonal, Adox Adolux APH09 and other Rodinal clones. They are also tagged with the correct brand name and dilution.