In Sig too!
Printable View
In Sig too!
By finding a web host, uploading there, and use a normal html IMG tag to link to it. You don't do it by attachments, since I remove those if I see them, plus they don't work for everyone anyway :p
http://www.myimgs.com offers 10 images for the purpose out outside linking free, which is nifty as you're not doing anything illegal by it.