This tends to be a no-brainer but some pages do ask a tad bit too much from possible readers/users by asking too many questions. The easiest and simplest way of verification would be the basic username, email and password and you could go a long way with those three. Adding more makes a page/site look hostile thus swaying potential users form even getting in.
Imagine trying to get membership into a page that slaps you with a 15 to 25 field questionnaire, discouraging, right? Keep it simple and effective for all these information once collated can be a lot to handle even for the best of pages and hosts.
