What things could fire random bugs?

Hello, I have been reading about destroy triggers and similar stuff at http://www.wc3c.net/showthread.php?t=101891.
I want to ask you others things that could generate random bugs in war3. I'd read RemoveUnit could, but not sure.
I know there are people with alot of experience, I want to know what things they avoid while mapping (to prevent bugs ofc), for example, destroy triggers

Random bugs are created by bad GUI triggers. (with lots of waits)
Jass maps generally have a lot less bugs.

I have used both RemoveUnit and DestroyTrigger in my maps and my maps never bug.
But that is only because I know what I am doing 99% of the time

In short: there are no things that you should use or not use to make your map bug free.
There are only things that you should know.

Learn and practice, and the mastery will come to you.

Everything that feels wrong COULD do this, but mostly nothing unpredictable. For example: trying to step outside the maximum unit limit too much or trying to position a unit too far outside the map may crash your map, just as infinite loops can. But these are easy to diagnose.
Also, when I test my maps through world editor, it tends to corrupt the file from time to time.
But all files get corrupt sometimes, so just make a lot of back-ups and you should be fine.

Oh I see =)
Thx for your reply

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If you use JNGP it keeps backups of your last 30 drafts as it is.