Best settings to export video from Adobe Premiere to Dailymotion and Vimeo?

I'm looking for the best settings to export my videos to services like Dailymotion and Vimeo.

I'm using Adobe Premiere CS3 and a basic miniDV Panasonic PV-GS80 camcorder but I think I'm not exporting correctly as my videos don't look as good as others. Compare for example to this one, the SD version of course, not the HD version.

Am I at the limit of SD and should think about buying an HD camcorder? Don't think so as the source video looks pretty good in Premiere and I know I'm losing quality in the encoding process.

I think there are some settings that work best for certain video sites, correct?

I'm not a video expert, not yet, but would like to get the best video I can to continue producing new episodes of In Silico.

Thanks for your help.