Glenn Fleishman explains a tiny tweak you can make in Lion that enables AirDrop peer-to-peer file exchange to work over local area Ethernet and wireless networks. This enables AirDrop for older Macs that lack the right Wi-Fi chips to work with AirDrop out of the box, and it also adds wired LAN access for even those Macs that do have supported Wi-Fi chips. follow link
Simplify Similar Syncs with ChronoSync Templates
You can create an unlimited number of ChronoSync documents with numerous settings and options that control your synchronizations. If you find yourself needing to create many similar ChronoSync documents, consider using templates.
Just create a ChronoSync document and set all the options the way you want them. Choose File > Save as Template to save the ChronoSync document as a template, and then open it in the future when creating a new ChronoSync document.
Search on "template" in ChronoSync Help for all the details.
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Enable AirDrop for All Macs with Lion
Check out the Take Control ebooks that expand on the topic in this article: