There are people interested in their genealogy who don't post to message boards, don't create trees at Ancestry.com, Geni,com, or the other sites. They simply put some names in the search box at Google or another search engine and see what comes up. Your "trees" on one of the tree sites probably won't come up.
Your blog just might. Some people will see your information and use it without contacting you. And others will contact you--just like at any other site. IIn the last month, I've had three relatives contact me simply because they found an old blog post of mine.
Consider creating your own blog. You can post weekly or monthly--daily is not necessary.
Source: Michael John Neil, Genealogy Tip of the Day, Posted: 12 Sep 2011 05:51 AM PDT