I feel-NO. Would you want your name all over the web and newspapers, from some stranger. I post information about deceased members only. By just posting the surname, and first name of lost family, my luck is, somebody has seen it and passes on the information. Then the ancestors will help you find these people. When I use snail mail, remember a lot of people are having financial difficulties. Debt collectors will use certified letters to get people to respond. I use envelopes that are colorful, example say christmas card envelopes, birthday card envelopes. I also pick up colorful business envelopes on sale at Office depots. My logic is, if a person recieves say a green, envelope from someone they don't know, they may be curious to open it up. When they open it up the introductory letter will be printed on a color other than white. If they lay this around somewhere and need to find it to show someone, they remember that green envelope with the yellow letter. Wouldn't you be curious?
Just this pass thirty days I googled, looked on people finder and phone book for a 'lost cousin'. Finally it came to me, try FACEBOOK. Everybody seems to love this. Up popped a person with the right name. The place she worked for posted a bio of it's employees. I mailed printout of confirmed information I knew she was descended from to the Job in a yellow envelope. I printed information on orange paper.The person who opened it happened to be a friend of hers, in the mail room. This cousin and left this particular job 2 years ago. The 'mail room friend' forwarded it to her. Living family found.
I even sent these type of envelopes to churches in the last place family lived. The church secretary put it on the church bulletin board. A lady there saw this green peice of paper and called me and gave me some family info.
I feel if you snail mail, just put a stamp on it and let it go.