What do you think, should tags be lowercased? Is there a compelling case to allow upper-case characters in the tags? Anyone strongly prefers sentence-cased tags?

Looks like there is a glitch currently when someone tries to enter tag, which is already in the database, but has a different character case.

The two solutions I can think of are:

• force lower-case all tag input -- there will be code to migrate tag names on your sites in that case)
• allow "freehand" case on tags -- in this case tag input will be cleaned against the case of the tags already present in the database and the very first tag entry will be unrestricted

Which option do you like better?

edit

now askbot allows both styles, switchable in "settings->data entry and display->force lowercase tags" (default is False), also there is a management command "fix_question_tags" that fixes inconsistencies in the tags.