Thats something to consider each time you escrow w. anyone on this forum. OR off this forum as well.
Its why people always mention to go with a reputable trusted escrow. Which you can find some here, whos done lots of transactions.
Eg: John K - already proved himself to the forum, with the past transactions with large amounts.
If you dont want to go with a individual handling it, there are websites like
http://btcrow.com/But, other question part is there isnt much you can do. Simply because your just handing someone your money / btc to hold.
Hope that helps.