Thing is, naming a rape victim is clearly illegal and wrong in itself, but it's also close to contempt of court or interfering in the administration of justice or something like that - it's flouting not only a law but the administration of the law. I'd say that makes it an extremely serious matter. Far more serious than wearing an offensive T-shirt or tweeting a stupid joke. Yet apparently a judge didn't think so. (Although the judge did say it was very serious, so why the extremely lenient sentences?)
People have been sent to actual prison for making racist remarks on twitter, for posting about the riots on facebook, for joking about an airport being closed... yet naming a rape victim, something that most people would agree actually is quite a serious offence, is treated far more leniently. Seems all out of kilter.
(I'm not in favour of the ludicrously heavy sentences for jokes or T-shirts, personally, but I do think naming a rape victim should be treated as an extremely serious matter.