As you may or may not have heard, Y!Go is (supposedly) hit General Availability, meaning that if you have a phone that can run it, you can... uhm... run it.
I'll also toss in that a lot of folks who've used it really like it. I have no idea how good it is, personally, since I don't have a phone that is supported. It reportedly has maps and local business listings, but also traffic, full y!mail integration (with MS Office document attachment handling), flickr support and I think it even does your laundry, but I'm not sure about that last one. There's a what's new document (PDF) that lists out what all you lucky stiffs who can run this can do with it.
Which, of course, doesn't include me.
Sorry if I sound a bit snarky about this, because it's not directed at the fine Y!Mobile folks. My problems are definitely related to the fact that my current carrier has decided to lock down a whole host of features that should normally be open to 3rd party apps like Y!Go (seriously, I can't even send a photo from my phone without ponying up a surcharge, and the built in GPS? Guess what else I get to pay to use?)
So, if you've got one of the lucky phones that are actually useful, g'wan and try it out. It won't cost you a dime.
Unlike me.
Who's seriously thinking about getting a new phone.