That's a fucking horrible suggestion. Jesus Christ. Do you really want to lay out a red carpet for image spammers? If you want to keep any intelligence in the irc you will take that suggestion back.
On the other subject: In defense (?) of random chat, it may seem uninviting during certain times of the day because when you first go in there you find a bunch of self-obsessed kids angsting and hugging eachother. However, if this interests you it's not very hard to become one of them. They really are an inviting bunch and are willing to help you out, but they're not much for "intelligent" conversation.
It's also worth noting that we do actually have good conversations about various subjects, but that usually only happens at about two in the morning on weekdays. Though these conversations do have a tendency to go back to sex ... but not creepy kiddy sex. Manly adult sex.