I think a lot of this boils down to the tablets hosting a Linux platform... and much like I tell people who are making the switch from Windows to Linux, mindset is key.

Since the tablets are a near complete deviation of the pay software model, a lot of hiccups ought to be expected. Most of these neat apps are done by people on their spare time for the love of programming or the satisfaction of being able to say something like "awe cool, I paired my Wii remote with my Internet Tablet!". Unfortunately in a lot of cases you get the support / adherence to development timelines that you pay for.

Conversely, a lot of this stuff wouldn't exist if you had to pay for it. You'd also... well... have to pay for it. The niche is probably too small at current for people to dump a tonne of money into developing apps and start marketing them.

I'd actually offer you the opposite advice of TexRat. (Hah! ) Look at the posts of junior members (and try to filter through the rage and bitterness, hehehe) and see what the tablet can do. Most of it isn't too difficult and there have been problems as of late, but remember people are more prone to spout negativity and disappear than say positive things. (When's the last time you called up your TV manufacturer and told them 5 years on it's working great?)

All that said, tablets aren't for everyone. See if you can get some hands on time.