Hi, I'm at the design stages of design a portfolio site and am thinking of incorporating a PHP "email this link" function, so that users can email the page url to friend etc. My question is how secure is this function? can I expect for spammers to hack my site and abuse this function or am I being paranoid? I've noticed on some sites that allow anonymous commenting that they sometimes become populated by viagra adds and the usuall crap. I don't really want to include an image verification script, would it make any difference if the "email this link" function had a flash front-end? Any advice or suggestions for further reading would be appreciated as i'm pretty new to PHP. Cheers