If you wish to embed an image in your posts you can do it by uising the camera icon onthe web page like this:
I don't know about the others, but I'm not going to mess around palying games with FileDropper to see your screen grabs.
That said, if you REALLY need bleed at the spine (and you nearly never do except for things like spiral binding) you need to make a decision about where the image halves are supposed to meet (and again, that depends on the binding). If In most cases it is suffiecnt to let the opposite spine edge of the opposite page provide the bleed area, but if you need to split a spread for some reason (see InDesignSecrets » Blog Archive » Breaking Pages Apart to Bleed Off a Spine) and the bleeding object crosses the spine you'll need to place it twice and crop back to the bleeds on opposite pages. If the meeting point is supposed to be inside the binding the two images will need to be offset, or, and I think this is a better solution, you can add the bleed allowance to the page width, adjust the inside margins accordingly, and eliminate the inside bleed setting.