votes#upvote saves the vote only if it doesn't already exist, redirects back if it does.
votes#upvote saves the vote only if it doesn't already exist, redirects back if it does.

PeterJahnes/dbc-overflow,kahdojay/dbc-overflow,PeterJahnes/dbc-overflow,kahdojay/dbc-overflow,kahdojay/dbc-overflow,PeterJahnes/dbc-overflow