If the other person's picture seems to be outdated, and they refuse to update it, you must put them in the "dishonest" pile. Even if you do not have a scanner, there's a variety of cheap and easy ways to get a photo scanned. There's no reason for someone to lie, unless they're hiding something. Don't put up with their dishonesty.
 

Be clear about which advertisement you are responding to, as some people have more than one ad on different sites and won't know how much information you have seen about them already.
 

If he doesn't respond to you, it usually means he's not interested for one reason or another - and that's okay. If you must follow up, make it brief and witty. And only once.
 

Put some effort into your responses; it's easy to tell when someone is just using the form letter type inquiry. Tell the guy why you're responding to his ad in particular.

Be honest about yourself and what you are looking for whether that's a one-night-stand or an extended relationship.
 

Don't worry if you get a negative response or no response to an add - there are plenty more frogs to be kissed - think of it as their loss. Don't be petty. If someone doesn't respond to you or return a photo, don't bad-mouth him in your profile. It makes you look pitiful and vindictive and that's no turn-on for anyone.
 

When giving out your location try to limit yourself to a region only, rather than the exact name of the town, province or neighbourhood. If you live in a large city, giving that information out is okay, if you're in a rural area, it's better to stick with regional information.
 

Don't publish explicit photos on the Internet or send them via email if you are at all concerned about others seeing them - you have absolutely no control over their destination once they are posted.
 

Don't send explicit photos that include your face to anyone unless you know them really, really well -probably after a face-to-face meeting
 

Use a different email address for personal ads and redirect the mail to your usual email address (Yahoo mail and Hotmail both allow this)