I noticed a lot of you guys have Photoshop, yet your uploaded images are HUGE! I pride myself on the fact that my image uploads are generally under 100kb, and even my sig with alpha channel is under 70kb.
When you save your image for upload, instead of going FILE > SAVE AS > JPEG, try FILE > SAVE FOR WEB > JPEG (Medium or High depending).
You can try a simple experiment to see what I mean, by loading up a blank canvas, squiggle some lines on it then do SAVE AS > JPEG and then again as SAVE FOR WEB > JPEG (high) and you should notice the difference in file size, yet the image quality should appear 99% the same.
Give it a go! No more 1Mb images PLEASE, I mean PLOX!