Cool - while I don't live in Boston, I get that radio station, it's one of my favorites. And given how U2-friendly Boston is, it's little surprise that this was a heavily requested song. Furthermore, this station plays a lot of U2 anyway, so not a shock to see them play "Vertigo". I hope to hear it a few times.
The one good bit of news is that I don't see this early popularity fade like it did with "Discotheque". This should NOT turn off fans. While I don't think it's U2's best, it's a damn good song that really rocks. I think fans will like it and appreciate the rock side of U2 that took a bit of a backseat with ATYCLB.