Only vote if you've actually verified that the app meets all the checklist requirements (http://wiki.maemo.org/Extras-testing/QA_Checklist). There was talk of having different weights of votes, so normal users could vote for apps that "worked for them" without needing to check off all the requirements, but I don't think this has been implemented.
i believe that i have tested some apps in those repos and thanks for the link. i'll quickly look at them