Thanks for sharing , for general Blackberry discussion/info http://blackberryforums.com/ is pretty good place, upgading OS info and all in and out info on Blackberrys some BB gurus out there.
I am using 8320 Curve, few applications I can recommend to any one with curve models are below (probably available for other versions too are) :
--BOLT and Opera , browsers (both free , both nice)
--MidpSSH , ssh clients for linux guys , I can connect to cisco switches and linux servers using this free app , pretty good
--Documents TO Go , Word, Excel and Powerpoint version ( The non premium version without Pdf is free to use , again a must have)
--Fly Cast , Internet Radio ( only for guys with unlimited bw packages )
--Mobiola XPlayer , MP3 player ( without its Internet Radio , its free , very nice , playlists maintenance etc , must have )
--SpeedTest , the speed test App for Blackberry, ( Tells me which of of my wifi is better , geeky addition )
--vlingo , the voice action app ( voice recognition , etc, just tell it to open apps in your voice and it will do , good recognition level)
--BBFileScount , File Browser , (good with some one with big sd cards , helps me sort stuff in my 4Gb card , installed recently testing)
--Chat client , probably people have these already , AIM , MSN , Yahoo , Google Talk and Instango for Jabber ( please note that Instango do not support Jabber rooms , only direct IMs)
--Mail Stuff , other than normal BB email setup , for Yahoo and Google , try 'Yahoo Go' and 'Google Mail' , the BB specifc applications , Yahoo Go is not push email as expected , but Google Mail is , you can configure it normally as well , but GUI for this app is pretty good and better than normally configured email account.
(All above are free apps and available from different sites like crackberry.com , blackberryfreeware.com and others I googled , dont remeber them all )
If any one know about any free Pdf reader for BlackBerry , please share.