I'm adding pictures, they're slow to upload and slow to show on my site

Remember that anyone visiting your website will need to wait for all the related files to load - if you have a number of large images on a page, this may take a while. I suggest that you optimize your files well to ensure that visitors don't leave your site in frustration at the delay (as a rough guide, a 640 x 480 image should be less than 100K).

We recommend that you take a look at these tutorials Creating Good Looking websites  and Images and More
In the section 'Understanding Images' in 'Creating Good Looking Websites' we explain why Smaller is Better.

"Minimize the use of images on a single page. As a rough guide, ten to twenty 20k images on a page is more than plenty. Be sure to optimzse your images for the web. All image files should be low resolution (72dpi). As a rule of thumb use GIF format for computer generated graphics such as simple logos, buttons or animations, and JPEG format for photographs or scanned material."

In these two tutorials we discuss the importance of DPI, file formats and Image Optimization and take you through the steps to optimise your graphics in Photoshop and Picnik.