Non-gold Creating Subscription

I, a regular member, was able to create a subscription.
sub:WonderBagel:General

"With a Gold account you can subscribe to a group of tags..."

I was just wondering, is it just forbidden or is a bug/oversight?

WonderBagel said:

I, a regular member, was able to create a subscription.
sub:WonderBagel:General

I was just wondering, is it just forbidden or is a bug/oversight?

Basic members can create subscriptions but they don't update automatically, so there's no point.