As Gavin said, this is one of the most divisive issues that I can remember.
I don't think, given the geography, that there's any chance of Syrian refugees landing on Corfu. So we can rest safely, Mythos in hand, undisturbed by the vast humanitarian crisis that's still unfolding.
It's important, I think, to (as others have said) distinguish between given shelter to refugees and economic migrants from EU countries. Despite the manifest lies that Farage has told (he said that we faced an influx of immigrants from Romania and Bulgaria that was actually bigger than the populations of both countries combined) EU immigrants have paid lots of tax, taken few benefits, and represent an effective export.
The In/Out debate will be an angry and often irrational one over the next three months. There are valid arguments on both sides. I veer on the side of staying in because the Out campaign has so far failed to present any coherent plan and has instead relied upon vague flag-waving and a Dad's Army approach to economics. Give me some facts. I'm listening!