Multiple Dropbox (Do It Yourself)

Great chance you know already how to run multiple dropbox... the very easy way
Yes, by using run as (that is right click on the dropbox shortcut choose "run as.." then select user other than current user) in XP, best candidate for "other user" is administrator because it's ghost user (not shown in login screen by default)

Or you can use dropboxen

But let me tell you another way, no need additional programs, no need to create another users, much flexible, portable and more DIYer :)

Right click on dropbox shortcut in startmenu, click properties, in target box look for where dropbox.exe installed in my case:


"C:\Users\qwerty\Application Data\Dropbox\bin\Dropbox.exe" /home


Now prepare create a new folder yourself where you will place a copy of installed dropbox, it could be anywhere even flashdisk.
Browse with explorer to until you reach bin folder (of target box above). There copy all files to your prepared folder -> this means you should have dropbox.exe there.

Sample of bat triggered version (for dropbox < 1.2.x)

@ECHO OFF
SET USERNAME=Joni
SET USERPROFILE=%~dp0%USERNAME%
MD "%USERPROFILE%\My Documents\Dropbox">nul
MD "%USERPROFILE%\AppData\Roaming">nul
MD "%USERPROFILE%\Application Data">nul
START Dropbox

Paste above text in notepad.

A little explanation, what I basically do above is to trick dropbox for thinking that it has been run by another user. Back again, you may freely change "Joni" into anything. it doesn't matter if the username doesn't even exist in your windows.

Save your notepad before as "drop1.bat" in your prepared folder too.
Double click that drop1.bat :) You know what to do next..

Recreate bat file with different username if you need more dropbox.

these steps has been tested on Dropbox 0.7.110 and 1.1.x and under Windows XP and Windows 7 (from VM)

Alternate bat (shortcut triggered) much flexible but need care (for dropbox < 1.2.x)   :

@ECHO OFF
SET USERNAME=%1
SET USERPROFILE=%~dp0%USERNAME%
MD "%USERPROFILE%\My Documents\Dropbox">nul
MD "%USERPROFILE%\AppData\Roaming">nul
MD "%USERPROFILE%\Application Data">nul
START Dropbox

Save it as droploader.bat in your prepared folder.
In this case, you didn't need to recreate/edit another bat file if you need another dropbox.
Instead create a shortcut of droploader.bat, Right click the shortcut and click properties. In target box add argument to droploader.bat with [username] each time you need more dropbox.
for ex in target box.:
D:\Dropbox\bin\droploader.bat joni
It will automatically setup everything for account Joni, just run the shortcut (O yeah, it would be neater if you rename the shortcut with [username] like "Joni's Dropbox" then copy this shortcut to your desktop, to your startup folder... wherever you want)

In Windows XP:

In Windows 7:

For version >1.2.x (thanks to MRACHINI, my dropbox also screwed up after upgrading):
Unfortunately this dropbox use stored id in registry (in short this trick no longer applicable elegantly). Here is how anyway:


@ECHO OFF
::by tumagonx
::not for exploitation!
SET OLDNAME=%USERNAME%
SET USERNAME=Joni
SET USERPROFILE=%~dp0%USERNAME%
regsvr32 /s %~dp0%DropboxExt.13.dll
md "%USERPROFILE%\My Documents\Dropbox">nul
md "%USERPROFILE%\Application Data">nul
if /i exist "%USERPROFILE%\Application Data\Dropbox\config.dbx" (
if /i not exist "%USERPROFILE%\Application Data\Dropbox\sigstore.dbx" del /q "%USERPROFILE%\%USERNAME%.reg"
)
md "%USERPROFILE%\AppData\Roaming">nul
if /i exist "%USERPROFILE%\AppData\Roaming\Dropbox\config.dbx" (
if /i not exist "%USERPROFILE%\AppData\Roaming\Dropbox\sigstore.dbx" del /q "%USERPROFILE%\%USERNAME%.reg"
)
if /i exist "%USERPROFILE%\%USERNAME%.reg" goto startnow
msg %OLDNAME% /w "Firt time initialization for %USERNAME%!, once dropbox done please exit via systray icon. You may re-run later"
Dropbox
reg export HKCU\Software\Dropbox\ks "%USERPROFILE%\%USERNAME%.reg"
goto EOF
:startnow
reg import "%USERPROFILE%\%USERNAME%.reg"
start Dropbox


You may not execute all of your accounts sequentially, you must wait previous dropbox until becoming "checked icon" before running other account. Enjoy!
And for Win7 users, follow these screenies if you're feeling lost:

Shortcut triggered version, for anyone who know how to figure it out :)

@ECHO OFF
::by tumagonx
::not for exploitation!
SET OLDNAME=%USERNAME%
:init
SET USERNAME=%1
SET USERPROFILE=%~dp0%USERNAME%
regsvr32 /s %~dp0%DropboxExt.13.dll
md "%USERPROFILE%\My Documents\Dropbox">nul
md "%USERPROFILE%\Application Data">nul
if /i exist "%USERPROFILE%\Application Data\Dropbox\config.dbx" (
if /i not exist "%USERPROFILE%\Application Data\Dropbox\sigstore.dbx" del /q "%USERPROFILE%\%USERNAME%.reg"
)
md "%USERPROFILE%\AppData\Roaming">nul
if /i exist "%USERPROFILE%\AppData\Roaming\Dropbox\config.dbx" (
if /i not exist "%USERPROFILE%\AppData\Roaming\Dropbox\sigstore.dbx" del /q "%USERPROFILE%\%USERNAME%.reg"
)
if /i exist "%USERPROFILE%\%USERNAME%.reg" goto startnow
msg %OLDNAME% /w "Firt time initialization for %USERNAME%!, once dropbox done please exit via systray icon. You may re-run later"
Dropbox
reg export HKCU\Software\Dropbox\ks "%USERPROFILE%\%USERNAME%.reg"
goto lets_roll
:startnow
if defined wait msg %OLDNAME% /w /time:45 "auto-waiting 45s while previous dropbox running"
reg import "%USERPROFILE%\%USERNAME%.reg"
start Dropbox
:lets_roll
shift
if "%1" == "" (goto EOF) else (set wait=1& goto init)


Remarks:
- Need eligible bonus space? Make sure you run the bat file (only for the first time) from other PC/VM differentiated by IP and/or Computer's name.
- You don't need to use real email to create dropbox account
- In case you wondering, dropbox is free file service provider that offer 2GB space, has client application (based on Python and WxWidget) that do file-synchronization (using librsync via python binding) to server (say goodbye to upload corruption) and the only one that offer true direct download link with decent bandwidth performance https://www.dropbox.com/
- Want to say thanks? click on my referral http://db.tt/krB1KA7 please click, it doesn't hurt, like me you too will get eligible 250MB bonus space!