depends on what theme you are using. unless you are handy with html
A moving image.
It is likely because the image is much too big for tumblr. If it has been replaced by a little gray box, the image is too big. Try making it smaller :)
a banner is the image at the top of your blog which has your blog title or your name in it. If you have a sidebar circular ones look better, but if your links are at the top a rectangular one looks better.
With javascript.
You cant do that. You have to take a screenshot on your computer of the facebook page or comment and post it as an image to tumblr.
There are no profile pictures on tumblr, only icons. Some themes allow you to upload an image on the sidebar though.
You can't. But you could watermark it so people don't steal it.
tumblr & twitter.
You need to select the "+ Upload Photo" instead of the 'Insert/edit Image"
1) Go to dashboard 2) On top of page, click on your Tumblr title (next to where it says dashboard) 3) Click on settings :)
To replace an image in After Effects, select the image layer in the timeline, then go to the "File" menu and choose "Replace Footage." Select the new image file you want to use, and it will replace the existing image in your composition.
OH! So 1) Go to dashboard 2) On top of page, click on your Tumblr title (next to where it says dashboard) 3) Click on settings 4) Scroll down to where it says "Ask" is gray 5) Check the "let people ask me questions" page 6) Title it whatever, and it will appear on your tumblr :) :)