according to my ideas, its good if you are planing to use your pc for ordinary normal things such as web browsing, email, listening to music, word processing etc.. and it would be better if you could use linux on it.
if you are planing to do some work which would take a lot of computing power, i do not suggest you to get this (gaming, etc)...
And im not sure about the upgrading capabilities of the pc!
some people says that the Intel Atom is an unsuccessful marketing attempt and core 2 duos available for the same price would do better than the Atom processor..