Pawel Szulencki Search Engine Optimization/Marketing blog.
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NOTICE: Working and up to date Ping.fm beta codes are displayed in chronological order. The last one on the list is the latest one and the one that is still working!
[Update, September 3, 2008] Ping.fm is in open beta. No invitation code is required anymore. Enjoy it.
Here is a working (still) invitation code for new service called Ping.fm: “legendofping”
Instruction:
NOTICE: the code will stop working after some number of people use it, so be fast and use it first!
The First beta code is “landofping“.
[Update, June 9, 2008] Another invitation code is “tastyping”.
[Update, June 22, 2008] Latest working invitation code is 

“letmeping“.
[Update, July 2, 2008] Working Ping.fm invitation code is “pingyoulater“.
[Update, July 9, 2008] Use “dreamofping” invitation code to start using Ping.fm
[Update, July 13, 2008] “pingbewithyou” - for all Star Wars fans
[Update, July 20, 2008] “thispingsforyou” - for all of you, who want to register with Ping.fm
[Update, July 22, 2008] Enter “pingadactyl“ and get in to the beta version of Ping.fm service
[Update, July 29, 2008] New Ping.fm invitation code is “pingscompany“
[Update, August 7, 2008] Tell your friends about Ping.fm! Tell them to use code “pingitlikeitshot” so they can get in on the beta action!
[Update, August 18, 2008] “vivalaping” - Ping.fm latest invitation code.
[Update, August 29, 2008] “legendofping“ - another working invitation code.
Sphere: Related ContentPawel Szulencki is a SEO (Search Engine Optimization) and Marketing certified specialist who is interested in organic SEO, paid campaigns (PPC) and Social Media Marketing channels. (Read more)
Corsair (1 comments.)
June 17th, 2008 at 3:29 am
Thanks for the beta code! It works!
Pawel Szulencki (18 comments.)
June 21st, 2008 at 8:44 am
No problem Corsair. It’s my pleasure i can help
istioselida (3 comments.)
June 25th, 2008 at 7:45 am
the new invitation code is pingofpings (June 25, 2008)
Pawel Szulencki (24 comments.)
June 25th, 2008 at 1:22 pm
@istioselida thanks for the new working beta code.
John Langdon (1 comments.)
July 2nd, 2008 at 1:03 am
@istioselida, this is working ’til now. Thanks.
John Langdons last blog post..Ustream - Avanço no broadcasting
Pawel Szulencki (24 comments.)
July 2nd, 2008 at 9:48 am
Update: “pingyoulater” is new Ping.fm invitation code.
Leonard
July 13th, 2008 at 3:48 am
That doesn’t work and this whole elitistic code think is a bit rediculous. SO ask for a donation or something and be done with it.
Pawel Szulencki (24 comments.)
July 13th, 2008 at 11:46 am
It didnt work because there is a new Ping.fm invitation code - “pingbewithyou”. Sorry for delay in sharing it.
NetEx
July 25th, 2008 at 1:35 pm
last one worked for me
Thanks
Pawel Szulencki (24 comments.)
July 25th, 2008 at 1:48 pm
No problem NetEx. Welcome to SEO/SEM blog by the way. Hope you enjoy it.