Hello ChristianPF community! I've missed you.
MintI am a recent convert to Mint.com. I absolutely love it! For one thing, this is a brainlessly simple (even a Christian Personal Finance Blogger can use it!

) way to create a FLOP (see
http://www.christianpf.com/your-financial-life-on-one-page-flop/ that is up to date. Way Cool!
Setup for Mint was fairly easy. You add in your financial institutions using your id and password. I was able to set up virtually every single financial institution that I use for my finances (there are 1 or 2 that I'm looking into and/or waiting on them for info). The biggest challenge in this respect was ING Direct. (This is the flip said to ING's heavily-touted security
http://www.christianpf.com/ing-banking-is-the-safest/). I am not exaggerating when I say that it took me at least 10 tries to set it up. (I finally did this past Saturday! I think I wore them down.

).
Plan to spend quite a bit of time setting up Mint as it "learns" from what you do. You can set up rules to make things easier (but I can't seem to set it up for split transactions). After a while (when it gets the "hang" of you and you have rules, etc. in place), it should be less manually intensive.
While Mint is a really great tool for keeping track of your financial picture and reporting where your money is going, there are some issues:
-For some transactions, you may have to wait a couple of days before it comes through Mint
-Mint is less good for forward planning (i.e. Where is your next paycheck going to go?)
Mint has a forum for your questions. Good tips & tutorials (this was how I figured out how to add ING).
Mint seems to be trying to tweak its features to make these more useful. Keep this in mind when you browse the forum for old issues. Mint may have introduced features that have solved the original problem.
You can use tags in addition to Mint's categories. This can be useful for independent tracking or earmarking savings/spending amounts (I wish there was a more straightforward way of doing this.).
Mint is a great tool. I don't see it
totally replacing my desktop Quicken -- but it's a start! (Shhh! I also use Mint to track my finances at work -- not an option with Quicken.)
Quicken OnlineQuicken Online (QO) claims to give you the info you need so that you can track spending on a paycheck-to-paycheck basis. This is a feature that I wish that Mint had so I signed up with them.
It was not as easy to sign up with my financial institutions with QO. Most of them were ok, but a couple did not go through. (Again ING was difficult -- no suprise there).
QO does not allow you to split transactions! This was a real deal-killer. I HAVE to split our WalMart purchases as these typically span a few categories.
I was also disappointed in the paycheck planning feature. I did not find it very useful at all.
QO did not seem to offer anything that Mint wasn't doing better so I deleted my QO account. Perhaps some Quicken users out there have some different perspectives.