I use history for a lot of things one of the most obviouse to me is I will be browsing and doing a lot of searching in the morning and will have to go to work before I find or absorbe the information I'm looking for. When I get home I just pop open the history tab and start where I left off. I use it multiple times a day for this and other uses.
I just found another real pain in the ass. When I click a link in my email it pops open a new window instead of a new tab or replacing the page in the existing window or tab. I can't seem to find a preference for this either.
Open up the Preferences, go to the 'Navigation' pane, and select the 'Tabbed Browsing' tab. There's a checkbox there that will cause it to open pages requested by other applications in a new tab rather than a new window.
There's also a history feature, in the sidebar. It wasn't enabled by default in 0.5 -- you had to muck around with a preferences script file manually to enable it. I'm not sure if it's enabled by default in 0.6, since I'd already enabled it manually, and 0.6 just picked up the prefs I'd specified in 0.5. Here's what you can do, though:
First, check to see if the history is already enabled: Open the sidebar (cmd-/). If there's a tab in the sidebar that looks like a clock face, click it: that's the history.
Now, if the history isn't already enabled, you'll need to edit a prefs file. Exit Navigator, then find the file <home>/Library/Application Support/Chimera/Profiles/default/<SOMETHING>/prefs.js. (<SOMETHING> will be a directory with a name that looks like gibberish. It's the only subdirectory under 'default'.) Open the prefs.js file in a text editor, and add the line:
user_pref("chimera.show_history", true);
to the end of this file. Restart chimera, and the tab in the sidebar that I described above should be present. However, I should warn you: The history UI is very slow, and not organized in a very coherent manner; I can understand why they keep it hidden by default, right now.
Personally, I'll gladly tolerate a dearth of bells-and-whistles (that I never used in other browsers, anyways) and some minor glitches for the massive improvement in speed. I have DSL, but I frequently browse sites that produce very large pages; The amount of time that I spend looking at the beachball when I load large pages in IE is a much bigger pain in the ass to me than the inability to adjust the browser cache size.