Here are some of the screenshots captured displaying the naming restriction in Facebook. Though these restrictions were not there, previous year, Facebook has made its system strict against Spammers.
Rule #1: No two capital letters allowed in a word
RaM - is not allowed !!
Rule #2: No repetitive characters allowed
Raaam - aaa is considered repititive
Rule #3: No Silly names, lol!!
Mr. Devil you cannot join Facebook !
Rule #4: You must not be more than 100 years old. 
1900 born Ramkumar being rejected. lol
Rule #5: Don’t register with stupid Email ids!
A real Email ID 
Rule #6: Bye Bye to Symbols !!
No symbols !! you can use Japanese language though
The above are list of different combination, that I have tried., incase if you have come across any such restrictions, please do share it here. it will be added giving credit to you. Thanks 
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Look like you’ve been experimenting with words =)
.-= blinkky´s latest blog ..How To Speed Up Your Computer ? =-.
Yup
I tried all the possible combinations, in which they don’t allow me.
Looks like I should get my 110 granny to sue Facebook for restricting her to join it!
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lol, Facebook already sued a lot by others. for fake celebrity profiles, and again our 110 yr old grandma shud sue, no dude., Poor Facebook.,
I know a woman called Nichole Kidmann and facebook won’t let her have an account because she shares a name with a celebrity.
.-= Doctor Crankenstein´s latest blog ..Tiptoeing With a Large Carbon Footprint =-.
Ya thats right, it was because Facebook was sued by some celebrity for someone else having a fake account on their name.
hmmm…. its seems to be that, facebbok is trying to make sure that the information we enter are real! too bad
.-= Pubudu Kodikara´s latest blog ..Give a New Look to Your Ubuntu Desktop with Conky =-.
Ya ., But that shud start something like this, every account shud be related to a mobile phone. get confirmation from phone., else each person can create how many ever IDs he wants to. I myself have 3 profiles., one personal another for blogging and the other for Mafia wars.(BTW i stopped playing mafia wars now, waste of time lol)
.-= Pubudu Kodikara´s latest blog ..Give a New Look to Your Ubuntu Desktop with Conky =-.
Hey you have tried lot of options man.Great research bro
.-= Yogesh Mankani´s latest blog ..Indian Celebrities on Twitter : Most updated list =-.
Thanks Yogesh
. I tried to create an account and it rejected,. so thought of sharing the various ways in which , registration can be rejected in facebook.lol.
lol, so many restrictions, i wonder how they make restrictions on names, its up to the user to keep whatever name he likes…
.-= Uttoran Sen´s latest blog ..10 Things to do Before Making a Blog =-.
Facebook is becoming very strict these days. Not just in registering name., even after registration, they put captcha while adding friends.!!
FB wants to make sure the person and contact info is “real,” because the founder, Zuckerberg, is an anti-privacy advocate. In fact, what privacy controls are in place, are only there because the majority of users wanted them. So although this piece was a nice exercise in due diligencing, the fact remains that FB is an outstanding way to publish your entire life on the Internet for all to see with very little restrictions as to who may see it. For those who blow off this statement, see also the Moreno MySpace case for practical implications into your life.
http://tinyurl.com/yca2ew7
Thanks for the added piece of valuable information mate.
all these restrictions seems funny.. Some of them were weird and looks irritating too…
.-= Rajesh Kanuri @ TechCats´s latest blog ..Top Twitter Applications Available =-.
Yup , the worst part is you cannot have two words in First Name., Indians are going to suffer
Oh wow! That’s really interesting, I didn’t know that facebook was doing that, but I guess with all the spammers out there, it is an important system.
.-= Max´s latest blog ..Staining Hardwood Floors =-.
Yup you are right, its all because of the spammers, they have made the system strict.
Seriously? Do you really get through all the steps for signing up or you just proving your point?
Well either way, I applaud your effort. There are some that I didn’t even come across before, wow.. I hope you managed to sign up in the end.
@wchingya
Social/Blogging Tracker
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lol. I failed in the first two attempts,which i thought was correct data, the third time It was approved, but i wanted to experiment the different ways they can reject. Thats how got the list.
After all possible combinations, I created an account 