This was originally posted in this thread  and I wanted to resurrect it in an area less filled with spam, but also mention that it is possible to share a profile on multiple computers.

Here is the method I used:

Requirements: Dropbox, Windows 7

Process:

1. Create a folder in your Dropbox (call it whatever you want)
2. Browse to: C:\Users\<username>\AppData\Local\Avian_Waves\RDTabs.exe_<some_guid>
3. Copy the contents of that directory to the Dropbox directory (you should only have a single folder, mostly likely named 2.1.24.0 for the latest release)
4. After the copy to the Dropbox folder is complete, delete the contents of the Source folder.
5. Open an Elevated Command Prompt
6. Browse to the same folder location as step #2
7. Type the following command: mklink /D <version number> <path to copied directory in dropbox folder>

for example:
8. Follow this same procedure on any other computers omitting step #1 & step #3

I've followed this procedure on multiple computers and it works just fine. I haven't tried having RD Tabs running on both computers at the same time and attempted to make changes to both, but Dropbox is very good about changes to open files, so I don't think there would be any problems.

Let me know how it works, I'm curious to see if it works for others as well as myself.