Ask on the forums. I don't know everything - in fact, there are more things I don't know than I do know. Alternatively, look through MediaWiki messages to see if one's got User Page or something in the name. I've seen it as well, and I'm fairly sure it doesn't require css.
Could be a cache issue. ListUser had a bug last week which made it inaccessible, and when I tried it this weekend, it showed someone's last edits as 2 weeks ago instead of 2 days. So it doesn't update well. Probably worth a bug report.
Hey Tupka. I'm not sure if you join chats or things like that, but just wondering if we could have a chat about something. It's something I'd prefer to discuss on the community central chat, if you have the opportunity and time to do so. :)
I'm not sure how I can help you. I'm also afraid I'm gonna have to give you a rain-check on that - was about to get breakfast.
It's about an issue on another wiki and I'm looking to get opinions from as many users as possible (objective opinions from those who don't even use said wiki), before I go to wikia staff or local sysops about the issue. That way, I can get an outsider's opinion about the issue first. :)
Just let me know when you are able to join the chat, if at all. :)
I spotted this in Wiki Activity: http://community.wikia.com/wiki/User:DonnellyGroup. It appears to be an account made exclusively for the purposes of advertisment. From what I can remember, this is not really permitted on Wikia, but I'm not sure. Could you please confirm it either way? Thanks.