Another question to Neven, continuing the issue of trying to minimize data usage for users who are limited or must pay for data plans.*
GIFs require click to load when their width is over 700 pixels, but load automatically when the width is smaller. Is there a way to adjust this 700-pixel limit to a smaller number, say 300? Thus only very small GIFs will auto-load, leaving the user the choice of whether to load or not. It is slightly less convenient for users with unlimited data, but I think something being prohibitive for some users trumps a slight inconvenience for others.
*Bitter Note: In Israel you can get a cellular plan with unlimited voice+text and nearly unlimited data for roughly $6 a month. So if you can live with escalating overpopulation, fundamentalism and apartheid, this might be just the place.