I run eyemap.io and in our early stage testing (about 30 people played with it so far), yes, generally that's the case, though pictures draw peoples' attentions more. Especially if they're of faces.
The reason why I asked is because I've been using Heroku for a few applications and I always seem to notice a slight delay when I navigate to a URL (they don't keep your server running if no one has accessed the app in over an hour) and I noticed a delay when I visited your page so I was merely curious.
