You can find someone trusted escrow services on the Internet or you can also find some members here who are offering this kind of services. If you use members on this forum I suggest to find someone with good trust and recommendations. Maybe is the best option to use someone you know and trus, like a friend or so.
you must not read the main post didn't you,he's talking about how to be an escrow and not finding the escrowers or any person who offering this service
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if it was from my opinion to be an escrow you need :
1. a bunch of good feedback or rating from people who had made or had done deals with you in the past,not the fake ones
2. be sure you can control your mind from turning out to be scammer
3. building up trust by doing such a good activities on specific place and giving proof that you won't running with money