So I set my signature awhile ago (I don't remember doing this) to point out that it's 2015 and email services like Gmail are banned, and we cannot use avatar images over 10KB.
I wanted to know if this would ever be remedied, because it feels a little weird..
The policy was implemented to prevent spammers and abusers / trolls from registering and re-registering with disposable accounts. As far as the 10KB limitation, it's there for a reason. Bandwidth and space cost money, and this forum is paid for personally and not through advertisements. It's kept low to keep it affordable.