I just got a professionally written, properly spelled, grammatically correct email invitation to look into doing book/author promotion through BookDaily.com. The email has no tell-tale scam warning signs, and the website looks professional and seems legit.

I was wondering if anyone has had experience -- good, bad, or indifferent -- with BookDaily.com, which claims to have 30,000 readers as active members. I'm trying to determine if I should be considering them in my marketing mix or running quickly in the other direction.