is HTML disabled? im confused...

[NickyBeats]

my signature is not reading as a link, instead its just the html, even though it works fine on other sites... im not sure if the html is disabled to keep bots out or what, but i also am unable to post images from URLs to my sketchbook. do i have to upload an image everytime? and is there a way to post images without having them appear as tiny thumbnails? im very confused...