you need to upload pics to a hosting site and then link to the pic.
i use photobucket.com they have a free and a pay service. it's VERY easy to use their site as they provide the code info for the pic once it's uploaded.
use the IMG line info to put pics in your posts. in fact, when you click in the field, it auto copies so all you have to do is click in the reply box and paste it!
pothos don't like to be waterlogged - maybe that soil is holding too much moisture? or maybe the soild doesn't hold enough moisture...
did the plant
start failing before or after you repotted it with the new soil?
how much water do you add? every other week should be generally okay for pothos...if it's not getting proper water when it IS watered, tho, that might be the reason it's not growing
too well...you've got it in good enough lighting, so that's not why.