1. Since it's an external web site with a little bit of tech behind it that presumably others are using, it might seem less desperate or strange than the post y

1. Since it's an external web site with a little bit of tech behind it that presumably others are using, it might seem less desperate or strange than the post you suggest. 2. The potential crushee can do the check without notifying you they're doing so. They might be too embarrassed/intimidated to actually tell you they're interested in whether you have a crush.