Technically speaking, yes. Realistically though, any transaction has to be included in a newly mined block in order for it to actually "go through" (or be recognised as valid by any Bitcoin wallet), so it won't increase the confirmation time. It will increase the speed at which miners process it though, yes. As long as you pay the recommended fee, however, there will be no problem. Personally, I always include a fee of double what the recommended fee is, and/or make it at least 2 - 3% of the overall amount I'm sending, mainly just to give back to the miners that make all of this possible but also to ensure my transaction is seen to ahead of other transactions that pay lower fees. Libertas