It could be - depending on how it will be used and the programs you'll need to run.
A netbook ('net or internet book) isn't very powerful when compared to a desktop PC or or a normal laptop/notebook. It's OK to surf the web, work with e-mail and other light duty computer tasks.
A laptop/notebook is the better choice for multi-tasking workloads.
The size/weight difference between a 13-15" notebook and 10-12" netbook isnt all that great. Most are between 2.5 and 6lbs.3 netbooks and 3 laptops compared