Having established what identity you are going to use and created the email addresses, here's how to create and ad that will be noticed.
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Put your personal ad on the larger recognised Personals sites that are application/database driven (Match.com, Yahoo Personals, Gay.com etc.) or sites for mature men/admirers (Apollonet, Relocate4U). See the GrayGay.com personals links page for reviews and analysis.
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If you are at all concerned about someone finding your ad, don't post it on a site that uses HTML for the data and can therefore be indexed and searched using search tools. If the page you are looking at ends in .HTML or .HTM and there is no search or password facility just a list of ads, then you are likely to be using an unsecured site.
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Some dating sites require your address when you register for their Zip/Postcode matching service but don't include your home number or address in the ad that will appear online.
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Never, ever give out personal information. This may be the most important thing for you to remember. Your personal information includes your real name, telephone number, personal email or home address. If they want to send something to you through the mail, get a post office box. They're not expensive! No matter how nice the other person may seem, you do not know them. While most people are decent, you can never be absolutely sure. Don't risk having this information fall into the wrong hands.