It could take awhile for one of them to come down from Mount Olympus, so I'll answer for ya: yes. Just be tasteful...
  Also, bear in mind that exceptionally large pictures will cause problems with slower machines. And, I've seen people on a similar UBB have trouble downloading sound clips. 
 Heck...there was a time when this site was something like a Saturday cartoon show! 
http://www.roguesquadron.net/forums/biggrin.gif) 
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 "I sought the true nature of reality but discovered instead the real nature of truth." 
 --Thrustweasel of Earth