OK, the original title of this was going to also cite a penchant for penguin lust and I am minorly annoyed that it just didn't fit...lol (I DO want to see what kind of mad google referrals kick off this post though).
A well raised point on another blog mentioned the self destructive tendency of many homosexuals to announce their gayness within minutes of meeting a person. They pretty much guarantee a response, and will ignore 1000 well wishers to brand the one person who expresses revulsion as some kind of sick bastard.
This goes against the idea of how to "sell yourself" to another person, and is, in my opinion, the achilles heel of many third parties; that they are so inclined to lead with their most inflammatory issues that people's vision tends to be clouded in regards to the many legitimate points they raise.
Effective communication would seem to indicate that starting from one's points of commonality and "working outward" is far more effective than the opposite means: many homosexual couples, for instance, have conservative family values, like the same sports and activities, and run in the same social circles as their heterosexual counterparts. Not all of these activities immediately involve one's spouse or partner.
If I am attending, for instance, a meeting of the local volunteer fire department, I am attending as a citizen of the community, not as a family man, or a married man. Though those points may come up in discussion, they are not the first thing I would tell someone about myself; I love my family dearly, but my family does not define who I am.
Now, this is a bit of a rambling article, but I said it all to say this: if you don't want to be perceived as different, don't insist on ACTING different. Greeting another person CAN be done without mention of your sexuality.