There are some changes in Gopubmed.org which makes it more useful to all-
The first major change is that MeSHPubmed is now included in GoPubMed. Gene Ontology (GO) and Medical Subject Headings (MeSH) are now integrated into one application. This change was requested by many users and enables the joint search in molecular biology and medicine!
Novel award winning text mining method for automated recognition of protein names.
When i used for this for a few searches i found the results more useful and exactly what i was looking for and i am looking to use this more often. Seems like a good idea!!