What are these hotkey sequences you speak of?

Hotkey sequences are a new feature in Apptivate 2.0 and their aim is to simplify your key combinations.
In previous versions of Apptivate, you could only assign one hotkey/key combination to a resource (application/script/workflow etc.). This meant that you would quickly run out of easy-to-remember key combinations and end up assigning items to something like ⌘⌃⇧F5. With Apptivate 2.0, you can assign a sequence of key combinations to an item. This means that you can assign ⌃A + S to one item, and ⌃A + T to another. To activate the item, you simply press the key combinations in order: first ⌃A and then either S or T.
Hotkey sequences also have the advantage of not forcing you to choose a key combination in which you need to be able to reach all the keys at the same time, and make it easy to group resources under certain prefixes.

I don't want to display Apptivate's menu bar icon, how do I remove it?

Apptivate 2.0 has a hidden default for this: TAShowStatusbarIcon.
To hide the icon, run the following command:

defaults write se.cocoabeans.apptivate TAShowStatusbarIcon 0

If the menu bar icon is hidden, relaunching Apptivate will bring up the preferences window. If you want to display the icon again, simply run the above command, but replace the 0 with 1.
Note: Apptivate has to be re-launched in order for the changes to take effect.

Where can I find an old version of Apptivate?

You can download an old, unsupported and free version of Apptivate here.

How do I remove an item from Apptivate?

Right-click on an item and select Remove from the menu.

Can I assign hotkeys to menu items?

No.

Can I assign a hotkey to Finder?

Yes, since it's just like any other application. Finder.app is located at /System/Library/CoreServices/Finder.app.

Apptivate's window keeps popping up when I boot my computer, and it's driving me crazy!

As of Apptivate 2.1, the main window is no longer displayed when starting Apptivate.
If you're using an older version of Apptivate, enable the "Hide"-option for Apptivate in your login items.
System Preferences > Accounts/Users & Groups > Login items

Can Apptivate control system events (Empty Trash, Volume Up/Down etc)?

Not directly, but most of the times you can write an AppleScript that does what you want.

Where can I find a changelog?

Here: changelog.txt

I've discovered a bug in Apptivate, what do I do?

If you're sure it's not a feature, you can send an email to iamnotabot_support@iamnotabot_cocoabeans.se (remove the iamnotabot_ parts) detailing your problem.

I have a question that isn't frequently asked, how do I get help?

Send an email to email detailing your problem, and we'll help you as soon as we can!

What are Suggestions, which were introduced in Apptivate 2.1?

Suggestions is a way for Apptivate to help you remember your hotkey sequences. For example, let's say you have three applications in Apptivate which have the following hotkey sequences:

Mail - Ctrl-A -> M
Safari - Ctrl-A -> W -> S
Chrome - Ctrl-A -> W -> C

Now, if you've enabled Suggestions in the preferences (by choosing either Delayed or Immediately) and you press Ctrl-A, you will be presented with a window that informs you that pressing M will open Mail and pressing W will get you one step closer to opening either Safari or Chrome.
Give it a try!