it's an electronic transfer of cellphone credit (mostly used by prepaid mobile users) to a particular cellphone number and being paid by cash. this term is most popular to Filipinos.
pare, san dito ang nagpapa-eload?
Refers to the number of emails a person has on their system, thereby is a measure of the amount of work they have to do.
"Crikey I've got a huge eload at the moment"