An update to Dropbox, the desktop file-synchronization service, lets you select any file or folder to share with others via a URL, no longer limiting such links to items in its Public folder. The new link format also provides a Web-based preview of many supported document and media file formats. follow link
View Full Threads in Apple Mail
Many users are aware of Apple Mail's message threading feature, which highlights related email messages within the Inbox. However, many people don't know how to view both sent and received messages within a thread at once. To do so, first enable Message Threading under Mail's Viewing Preferences. Then, Command-click both the mailbox containing your threaded messages, and your Sent box. Now you can view both sent and received messages within the thread simultaneously.
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Dropbox Update Shares Any File or Folder