Create an account (or not) at https://imgur.com and load them there then copy the direct link (ends in .jpg) to here inside {img}{/img} tags [ for{ and] for }

photo hosting is included with dontation membership here but imgur is faster and easier to use with drag and drop quick hosting speed.

If you create an account on imgur.com they stay hosted longer, if you host there just for a demo (no login @ imgur) it drops off after 90 days or so and even sooner if it isn't getting any views.