There's something weird happing on one of my sites and I'm not sure how to go about trying to prevent it, if it's at all possible. Maybe someone recognises what I'm about to describe...
Everyday I'm getting multiple (5 - 10) "visits" to the homepage of the site via Google through a search (according to Analytics) for "brand name keyword1 keyword2". These visits are only for the homepage file, therefore being registered as 100% bounce every time. SOMEtimes a few other files, e.g. images, are downloaded too, but it's mainly just the homepage file itself that's requested. It used to be from a single IP address too but now that changes. According to Analytics the visitor uses Safari on a Mac. Using this info I saw what was happening on the site logs. What could be causing this? Is it some kind of prefetch phenomenon?
My concern is that so many of these ghost visits, creating a high bounce rate for the above key phrase, is going to jeopardize the site in some way. Should I be worried?