What about this new Mac Book is it too skinny to be any good?

The new macbook is called a macbook air

specs:

Display 13.3-inch glossy LED backlight TFT LCD widescreen display, 1280 by 800 pixel resolution

Graphics Intel GMA X3100 graphics processor with 144 MB[10] of DDR2 SDRAM shared with main memory nVidia GeForce 9400M graphics processor with 256 MB[10] of DDR3 SDRAM shared with main memory

Storage 80 GB[8] ATA 1.8" 4200 rpm HDD or 64 GB SSD 120 GB[8] Serial ATA 1.8" 4200 rpm HDD or 128 GB SSD

Front side bus 800MHz 1066MHz

Processor 1.6 GHz or 1.8 GHz Intel Core 2 Duo Merom,[35][36] 1.6 GHz or 1.86 GHz Intel Core 2 Duo Penryn[13] (SL9300/9400)

Memory 2 GB 667MHz DDR2 SDRAM soldered to the logicboard 2 GB[10] 1066MHz DDR3 SDRAM soldered to the logicboard

Wireless networking Integrated AirPort Extreme supports 802.11a/b/g/n

Wired Ethernet none, Optional USB Ethernet Adapter

Optical storage none, Optional External USB SuperDrive

4x DVD+/-R DL writes, 8x DVD+/-R read/write, 8x DVD+RW writes, 6x DVD-RW writes, 24x CD-R writes, and 16x CD-RW recording, 8x DVD read, 24x CD read

Camera Built-in iSight, 640×480 pixel resolution

Battery 37 W-Hr Lithium-ion polymer battery

Physical dimensions 22.7 cm D × 32.5 cm  W × 0.4–1.94 cm H

8.94 in D × 12.8 in W × 0.16–0.76 in H

3.0 lb (1.36 kg)

Bluetooth Built-in (2.1+Enhanced Data Rate)

Port connections 1× USB 2.0

1× Micro-DVI video port (adapters are included for VGA or DVI monitors up to 1920 by 1200 pixels)

1× Headphone jack (3.5 mm) 1× USB 2.0

1× Mini DisplayPort video port with HDCP[37](adapters are optional for VGA or DVI monitors up to 2560 by 1600 pixels)

1× Headphone jack (3.5 mm)

Audio Built-in microphone and mono speaker

mono output jack

Keyboard Backlit full-size keyboard with ambient light sensor

Trackpad Multi-Touch gestures like the iPhone, iPod touch, MacBook, and MacBook Pro

K-slot None

and it costs $2499 in AUS so it is not good. normally memory 1gb 1.66ghz and 80gb hd. complete failure . get a macbook (normal) not a macbook air

The Macbook Air is absolute rubbish. you're in fact paying $1500 for the equivalent of a $4 hundred netbook. The Macbook professional is a plenty smarter purchase. or you ought to consistently get a domicile windows-based laptop. there are various fashions to choose for between and all provide you an stunning fee to you funds.

You'll have to be more specific.

Which MacBook -- Air? Regular MacBook?

And "any good" -- for what, exactly?

The Macs are all great for their intended purposes, respectively. How do you plan to use it, and what functionality will you need?