Bandwidth for free users

Hi,
I too require some clarification on bandwidth.

I repersent a Team blog ( group of photgrahy enthusists.. ) in Tamil..http://photography-in-tamil.blogspot.com/...

This is a free blog, and the contributirs are doing this for the sake of passion... ie.. there is no revenue from this blog and no one is getting paid.

We regularly host monthly contest to motivate our readers. Uptil now we have been using the urls form contestants to see and judge the pics. This was proving to be time consuming and more cumbersone.

But after my aquaintance with Zoho, especially the ability to show the image thumbnail using the formula bar, the admin team has decided to use zoho forms to collect contest entries from this month onward (July 2008).

This move has been welcomed by our readers and contestants alike. I hold a free account with zoho, and i am personally managing the layout, script, and data collected using zoho form.

However, our pressing concern is... there is going to be lots of pictures every month ( Average of 70 - 100 pics). When do i need to watch out for bandwidth probelm ?.. What is the bandwidth that is allwed..? ... what will happen when the bandwidth is exceeded.. ? will we loose the pics ?..

Please address the above concerns.
I really love zoho and would hate not to use it in our team blog.

Thank you,
Regards