We moved from vBulletin to XenForo and everything that should go up is going up except for the registration rate. We've had vB+vBSEO in place and we were doing ~150 registrations/day. But after migrating, the traffic went down by about 40% (and its recovering faster!) but the registrations are down to 30-60 per day. Members are absolutely in love with the new system & design. We've even had our old members appear from oblivion. The only trouble seems to be with the registration. We've FB Connect enabled and even tried various CAPTCHA settings. But the registration rate is constant at 30-60 members /day. What's your experience with the registration rate on your site after migrating to XF? What are you doing to improve it?