I have the exact same one! I use it for itunes, ihoto, web, office, etc. Nothing major. Took advantage of amazon's deal on RAM and maxed it out to 8GB of RAM.
I think it's a great machine. The screen is a little small but it's portable and quite cheap. It's pretty zippy -- I would love a Core i5/i7 but I prefer to save the $700+ and put it in my brokerage account.
Got mine with AppleCare until August. 2013 for $635 on eBay back in November 2010. 😀