I'm dipping my toe into online dating and and exploring meeting guys that way but I'm wondering about some of the more subtle rules. I've heard some horror stories about online dating but my experiences with online dating had been mostly good with the guy I met although my follow through needs work.

How do you engage someone you're interested in who has view your profile but didn't send you a message? Do you send them a PM or email? What do you say in it? How long should it be after you decide to meet in offline? Profiles with no pictures how do you respond?

What are some of your rules for online dating? I think it would help newcomers navigate the online dating scene if they had some direction and guidelines.