Problem caused by a ' mark in a members username

We are having a problem with viewing a member's user profile from vB. In researching this I discovered the following:

The username in question is V6'er.

His profile link is pointing to http://www.mr2board.com/forums/members/v6er.html

If you manually edit the link to read
http://www.mr2board.com/forums/members/v6'er.html you are then able to view his profile. Should I just rename his account, or is their a way around this?

Hello,

the special characters are removed from usernames in URLs by default. You can set the following option by manually editing config_vbseo.php to keep these characters:

define('VBSEO_REWRITE_MEMBER_MORECHARS', 1);

Any negative effects from doing so?

The URLs to member profiles will be looking "not so clear" with urlencoded special characters in the link.
Another option for you is to include user_id part in URL format, like:
members/[user_name]-[user_id].html