wiki answers has been viewed over 5 million times.
No, Facebook does not allow users to see who has viewed their profile or how many times it has been viewed.
from 2005-2010 it has been used close to 20-25million times
According to Quantcast, 67.7 million viewed a page on the WikiAnswers section of Answers.com during the 6 months ending 7/13/2010. There are 9,097,884 answered questions on WikiAnswers as of 7/13/2010.
There is no official way to tell how many times your profile has been viewed on Facebook. There are some third party apps that claim to do this, but many do not deliver on the promises or end up being only viruses or malware.
WikiAnswers does not currently track how many times each profile is viewed.There may be third-party HTML counters or image hosting sites (which track how many times the image is viewed) that are compatible with WikiAnswers profile pages.Note:Answers Corp. cannot make a recommendation regarding any of these services and makes no warranties regarding your use of their product.
It is currently not possible to tell how many views each video has received as per Facebook Support
Hit on Piczo is how many times your Piczo page was viewed, for example how many times each visitor viewed your pages. and "visits" on Piczo is how many different visitor has your site :)
The number of online contributors to WikiAnswers varies. It can be up to thousands at peak times.
Millions and millions...
As of August 13, 2013, there are 19,591,633 questions that have been answered on WikiAnswers.
Wikirank has said that as of the ending date of August 9, 2009, this wikipedia page, "The Gospel of Thomas Association" has been viewed 3,207 times.
Infinite