1.) It does help, but make sure the keywords you put in bold make sense to the people reading and using the site. 2.) I'm not sure since I don't use Blogger (I'm a WordPress guy), but generally the rules should be the same as other types of sites. Which he was quick to correct himself after he got called out by a Google engineer stating that B and STRONG have the same weight; just like EM and I have the same weight in the search engines. http://www.viperchill.com/articles/matt-cutts-lightening-round.php