Okay to start off with, I am doing this right now with my brother I will update when were done and the /played times and such, also if this is a repost I am sorry but I havent seen it posted so far, also this is a bit of common sense so not to much of a big deal. (I am also making the assumption that you have a 30+ alt that you would like to be 60 sitting around most people do)
Hears how it goes.
1) find a friend or guildie who is interested in leveling an alt
2) recruit your friend with your main account
3) have him sign up for an account with the same last name as his current account
4) upgrade to a full account (30$ at Circuit City this week)
4) create an alt on your main account that you want to level and have your friend do the same on his recruited account
5) both you and your friend level together to level 60 taking advantage of the bonus xp and summoning features (were having a good time so far, because grinding to 60 isnt as boring if someone is doing it with you)
6) use the 30 levels (free levels to give out) your friend accumlated while leveling his character to 60 and spend them on your 30+ alt to get him to 60
7) Your friend then transfers his 60 to his main account for the 25$ account transfer fee
now you have 2 level 60 alts, and he has 1 for a cost of 27.50 each which to me and my brother is a small price to pay for the time saved if we were to grind to 60 without the xp bonus. in our situation I am paying 35 and he is paying 20 because I am the one ending up with two 60's.