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In the SEOMOZ site report a number of errors were found. One of which was no or duplicate meta desctions on certain blog pages. When I drilled down to find these i noticed thosepages are the wordpress autocreated archive pages. When I searched for these through the wordpress control panel through both pages and blogs they were nowhere to be found. Does anyone know how to find these pages or are they not something I need to worry about?

We have purchased a keyword rich domain name as well as a short domain name(the acronym of the company). I would like to only advertise the short version and have a 301 redirect to the longer version. If we get a lot of traffic to the short version is that credit/authority passed on to the domain we are forwarding to?