i use Photobucket--which also has a mobile app. just post by going to the desktop site and copy/paste the [img] code to a reply and it should show.
Samsung Galaxy Precedent (rooted, AreaRom 3.4 , sd-ext w/ 3.65GB internal space)
Kindle Fire (1st Gen, rooted, AOKP JB 4.1, Nova Launcher)
BlackBerry Curve 8520 (Work)