I use Slicehost, after looking at Linode's pages these features seem to be missing:
Bandwidth is pooled between all of your slices.
Money is pooled -- if you pay a certain amount, you get the "annual discount", but then you can use that for paying for whichever slices each month. And you can bring slices up and down whenever you want to, and pay a prorated amount.
There's a nice API so you can automate a lot of your activities.
On the other hand, Linode does seem to be a bit cheaper on RAM and a lot cheaper on bandwidth.
Bandwidth at Linode is also pooled for Linodes withing the same datacenter (of which they have 4). You can also bring up any number of Linodes and bring them down whenever you want. You will be charged for the full month but if you bring them down, they will give you credit for the unused portion of the month (rate is per day). Linode also has an API for their DNS service but I haven't really used it so I won't comment much on it. In short, Linode is a pretty good deal.
Bandwidth is pooled between all of your slices.
Money is pooled -- if you pay a certain amount, you get the "annual discount", but then you can use that for paying for whichever slices each month. And you can bring slices up and down whenever you want to, and pay a prorated amount.
There's a nice API so you can automate a lot of your activities.
On the other hand, Linode does seem to be a bit cheaper on RAM and a lot cheaper on bandwidth.