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Thanks so much Thomas for your thoughts.  I definitely don't want to have duplicate content.   I guess what I am still wondering is this.   One of the sites is a church and they have their own website in our town.  The pastor for the church has been posting his sermons and blogging on blogger.  So we are going to move them from blogger to wordpress (big fan here too) and I was just going to redirect everything and in effect shut the blogger site down but what I am wondering now is if it makes sense to leave some remnants of the blogger site behind (beyond just the redirected urls). Maybe we shoud eave a few posts that only appear on blogger so that perhaps we can get an occasional extra spot near the top of the serps for some keywords.  I would also not be surprised if having a verifiable history of authorship on blogger that goes back a ways further than any imported page would be factored in by google when looking at the author's authority on the topic (i.e. in this case religion and my home town).  Also, having authorship on two different domains would show diversity and help as well.