[Off Topic] I stopped working on my link exchange mid-June, for a few reasons. I put a lot of time into it when I was starting it, and I never really got a lot of members on it. In the future, I will prolly re-vamp the entire thing, make a nice clean xHTML/CSS2 layout, and clean up the code. Until then, I'm just going to leave it there. [/Off Topic]
Anyways, yea. At times personal scripts/codes can be un-secure, but by now, for me at least, I know enough PHP (With MySQL) to know what I need to do to stop problems such as those.