Not really a good reply, but I think that hashify.me's potential for an IE audience was probably small to start with. But consider this: if this idea took off, wouldn't this press MS into keeping IE more modern?
My mobile browser of choice does not support cross browser resource sharing, according to the article...or rather the error message I get in lieu of the article.
Yeah, his message was 5548 characters (so the URL is at least 7380) which is way too long for the generally accepted 2000 character limit. So this particular protocol could use some enhancements - maybe a feature to break up messages into several parts represented by other bit.ly addresses. This would keep URL length under control