WALRUSCP  Memory and performance continue to improve, but still more of a memory hog than Typinator. After a while TE shoots up to 186 MB RAM used (I have 2705 snippets) whereas Typinator consistently stays around 20 MB RAM used with the same number of snippets. It could be a memory leak, since TE generally starts and stays around 40 MB or so. Usually find it shoots up after a day or two.  
(Version 2.6.2)

CLAKES  - Can't set HotKeys

- Not able to duplicate items

- Troubles sorting and organizing snippets into groups

-> Typinator (also a little cheaper)...

Sorry.  
(Version 2.6.2)

M57  I was a longtime user of TypeIt4Me, the first Mac app that did this sort of thing. TypeIt4Me is really the granddaddy of these sorts of apps, but unfortunately, like a grandaddy it has sort of gotten a little slow and outdated. I switched to TextExpander because of expansion issues with TypeIt4Me, issues that I brought to the developers attention and he could not fix. Basically it couldn't keep up with me when I was typing fast and would expand words in the wrong place. I have only used TextExpander for a week, but I have not once had the same issue. Also, I have found the user interface more intuitive. TypeIt4Me is still a great product, so it is worth checking out if you are in the market for this kind of utility, but for now I have happily made the switch and would recommend TextExpander.  
(Version 2.6.1)

SIGIL  This is an essential Mac App! I have never regretted this purchase. I use it everyday....It's the best!   
(Version 2.5.2)

WALRUSCP  Really like this app, and I use it daily.

I have had this problem though: I will use a snippet in one form field. Works fine. But then I will try and paste some text in another field right afterward and it will end up pasting the snippet I just used instead of the text I had in the clipboard. I then have to delete the text and then try pasting again, which works the second time.

Other than this bug, this is a terrific app!  
(Version 2.4.1)

TAZINTOSH  I think I've tried everything possible, in any ways: I can not get it to sync on MobileMe.

I would like to be able to sync every snippets so I could have the same data, automatically updated beetween my work & my house. It worked one or two times... then never more.

Really anoying...

(I'm on 10.5.5 with the lasted known version of TextExpander).  
(Version 2.4.1)

REVOLUTION  After excitedly watching all of the screencasts on the SmileOnMyMac website - I installed this app.

Unfortunately, on the first install - only the snippets ttime and ddate worked (while ignoring all of my other created shortcuts).

I removed the preference pane, and re-installed it. The second time, my snippets worked correctly, until I created my own "Snippet Group". I was unable to move my existing snippets, and saw my shortcuts disappear one by one (deleted, not moved). I then attempted to remove the group, which led to a delete confirmation dialog that would persist even after clicking Delete or Cancel - I had to kill the System Preferences process entirely.

Overall, my experience with this software was nothing like the Screencasts. Although with upcoming releases, I will try it again - as I believe it is an invaluable resource for anyone who sends out e-mails frequently throughout the day.  
(Version 2.4.1)

TFINDLAY  Big performance improvement! No lag at all when clicking the menu icon.  
(Version 2.4)

HINES2KJ  Well, as usual, another developer that creates an app that doesn't work.

I follow directions, set Hotkeys, and and just cannot get this to work.

Why, WHY charge people for this?

Why BUY this?

the only good thing about it is it's stable...  
(Version 2.3)

SHRALLDAM  Bought TextExpander as part of the MacHeist bundle and I'm very happy with it. The only weird thing happening is that it continuously synchronizes with MobileMe, even when I didn't modify anything.  
(Version 2.3)