can I use a micro sd card with my ipod touch 4th gen

Hi!

Straight answer: No.

This was a feature that most iDevice users hoped for, but apple are too stingy to make it happen. If they did make it happen, the models with more memory wouldn't sell.

Really sorry if you're disappointed.

~Naomi =P

Unfortunately, no. iPods don't have expandable storage.

I won't buy one until they do have an SD slot.

One of these

AirStash®: wireless flash drive + pocket media server + SD adapter for iPad, iPhone, Kindle Fire, and more