Is it better to have the front wheels toe in, toe out, or straight? Ihave just got a new Ofna buggy and the front wheels are really toed out a lot.

Generally toe out will get you into the corner faster.

Toe out give you better steering but makes the car a little twitchy on high speed straights.  Toe in gives you better straight line stability but you lose some steering.  Most people run toe out.  Don't run more than 2 degrees toe out or it will really effect your handling badly.

is there any way (trick)  to measure toe out easily.  Mine really looks like it may be more than 2 degrees. 

Yup..its called a "Set-up Sation". If you can dish out the cash for one right now, you can use a leveler. Ihave a 2 foot leveler and I use to put the leveler beside the rig touching the front and rear tires simultaneously. I would adjust the turnbuckles so that the front tires were flush against the leveler.