Would it be possible to have a dynamic exp boost based on the number of players online at any one time. It could be a sliding scale in blocks of 5 but would allow those people who are unable to get groups of three in low numbers to still advance to a reasonable amount. If more people log on to take advantage then the exp boost wanes but the numbers of people increases and so does the opportunities for groups. It may have already been osted but I couldn't be arsed to read through ALL the replies in the link below but I think this would work. Whether it can be coded is another issue!

-----Abernyte