Ask HN: Any ideas on testing misspelled domain names?

I own the domain blnik.com. I have an idea for a service that I want to launch, possibly on that domain.

However, while I like the name, I am also unsure about how much impact the misspelled domain will have. Looking at history, it seems that for some sites it works for others it doesn't. And that it is hard to get an idea about how much the name contributed to a site's success or failure.

So is there any way to get some idea if a misspelled name like blnik will be a hindrance for a service targeted at college students?