Been looking and quite a few are available. If you look at the letters (yeah, really ) you'll realise that the small l looks like the large I, so would domain names with that replacement be worth anything? Examples: lreland.com (obviously taken) lrritate.com (available!) and so on.
That's true. But would you write lrritate.com instead of irritate.com in your browser? I don't think anyone would. So if you ask me, it's worthless. It's the same with s€x.com and stuff like that.