Like it or not joining a guild can be of immense help for the newcomer. Sometimes they will be all for roleplay and do it right from the start and the guild can be a significant element in that decision. I know it was for me when I first started playing. Other times, maybe because they chose their guild poorly or simply because that's who they are, they will be drawn away from roleplay. However, if they enjoy the game that way and don't get in anyone's hair, let them be. No need for more rules, especially when so many players will be asking for an exception. Time weeds out guilds with no real purpose as it weeds out players with no real interest in what PS can really offer. The same way time brings back old thread topics. Click
here for some interesting ideas on how to improve the guild system.
Now, about how to recruit specifically, I think a mix of IC and OCC is needed. IC is fundamental to really transmit the guild's vibe. You have to enjoy how your potential guildmates RP or else you'll be sorry you joined (and that applies to players who are into RP as much as those who aren't). And OOC is important to walk the newcomer through as they experience roleplay and game mechanics for the first time. They should see how the guild handles both so they can evaluate if the guild offers answers to their needs.
