Great post I am sure alot of people will find that useful.
Another thing I don't see mentioned much is ways remotely access information w/o web based applications.

In my current setup I have 3 computers that can use site link at our office. 2 always there one my laptop.

I can remotely connect to either of the two computers in the office any time to enter or change information and print off reports. We just recently started using a answering service, for which I get all the e-mails right on my smart phone. No matter where I am I can get that message, either remote control a office computer with my phone to get information. Or connect the phone to the laptop for internet connection as well. Or if you are home do it at a computer there.

Another nice thing is I can control my gate remotely from my phone the same way.

I am currently using www.logmein.com to do this, They have a free version if you don't want to transfer files or print. But I like the added pro features.

So now you have the functionality of a web based program, sure tenants can't look up info themselves, which I admit would be a nice feature to have. Or making internet payments or rentals, again nice stuff to have.

But with the 24/7 answering service I can get information out pretty much any time and get back to customers to take a phone cc payment or something.