Of course it could. Especially if you have large animated ones. The amount of bandwidth used will depend on what you have available to users and how much they use it.
Blue Man Group There is no such thing as stupid questions. Just stupid answers
So anytime one of these emoticaons that are hosted on the site get displayed, it would go against the allotted bandwidth usage per month we have through our hosting site?
Well yes. Any animated image is larger than normal. But once it is loaded to the browser the bandwidth is done. Usually. But if say you have 10 net new visitors to your site. And then they load up large animated images in their browser. You take a hit for a moment.
Don't know where you are going with this. You would either need to have a extremely busy site and or some large gifs to really make a impact on bandwidth.
Blue Man Group There is no such thing as stupid questions. Just stupid answers
I would think the spiders would cause more slowdown to bandwidth than emoticons... 80 is a lot of spiders going through your info and pulling up posts. I usually notice a difference when I hit about 60 spiders. On average I usually only have 32-40 spiders at a time though.