You need a web-hosted photo service. Photobucket is what I use. You upload your pictures to the website, then when you want to add a picture to your thread or reply on the GLA site, you simply use the link assigned to your picture, and copy and paste the URL into the reply or thread. Pretty easy and doesn't eat up space, as your picture is being 'hosted' by the photo site and 'viewable' on the GLA site.
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