1. Plaxo Plaxo was founded by Sean Parker, the man behind Napster (remember?). It is a great, fully Outlook-intergrated P2P based application. However, when I installed it last December, it was running quite instable on my 3.000 contacts. Also, unlike GoodContacts (cf. below), Plaxo supports automatic updating of information for fellow Plaxo users only. 2. [...]
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