Limited Guest Viewing Mod -- Hurt SEO?

I never really thought about it, but the bots that come to the site would encounter issues with one of my mods. I have this mod enabled from vb.org -- Limited Guest Viewing -- Improve community registration rates - vBulletin.org Forum.

I presume that this mod is not SEO friendly and is actually hurting my forums from being properly vetted by the bots. Am I correct in assuming this?

I would agree with you.

Actually, I believe Google has said, if viewing is limited after 5 pageviews (in any given 24 hours), it is ok(?)
(They changed thier 'first click free' policy as it was getting abused by people using google to get to subscription content).

Will have to find the article.

Not sure abut the other search engine, but think they aren't as strict anyway.

Official Google Webmaster Central Blog: Changes in First Click Free

In theory all you end up doing is forcing people to join, who still remain non posters or they just go else where
Rather have someone find you, keep returning and one day join.
Plus you have more chance of earning from adscence clicks while they are browsing

^+1

Forcing someone to do something is never in your favor.

Was only offering an answer to whether it hurts SEO.