Perhaps you have a 100% ajax "client", and don't need AR, or just need simple AR, merb would be ok and save some overhead you get with rails for the 80% of it y

Perhaps you have a 100% ajax "client", and don't need AR, or just need simple AR, merb would be ok and save some overhead you get with rails for the 80% of it you will never use. Thats my take anyway.