I needed to test to see how Posterous would handle posting to my Oracle blog, Twitter and now Linked-In. And gave me a good chance to write a quick update on how I really like Mozilla Thunderbird 3 for email.
I had used Thunderbird 2 before but I had given it up - in fact I had pretty much moved to Outlook as my primary desktop email client. We also have Zimbra for Web-mail which is nice but sometimes acted wonky in my browser.
In particular I like the new search in Thunderbird 3. It's VERY fast. Fast enough that I have shutdown Google Desktop and forgotten about XOBNI.
So if you are looking for a desktop mail client - with good search. I would suggest giving Thunderbird 3 a try.