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> Tidbit uses the Stratum protocol, which would enable websites to get paid based on total work contributed to the mining pool rather than total Bitcoins mined

No, that's what P2Pool, or really any pool, does. Stratum, as the link states, is just a long-poll protocol to reduce stale shares when a new block is found.

But speaking of pools, it seems like the best bang for their buck would be a scrypt profit-switching multipool, that mines the most profitable scrypt coin and exchanges for btc or dollars or whatever. This would potentially create a huge pool so p2pool is better in that respect, but it's just not profitable to mine BTC like this at all.